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210231100212 = 2237191087121181
BaseRepresentation
bin1100001111001011000…
…0000000001100110100
3202002122100220102111220
43003302300000030310
511421023130201322
6240325010030340
721121502603340
oct3036260001464
9662570812456
10210231100212
1181181a80221
12348b1b783b0
1316a94b62623
14a264c00620
15570678155c
hex30f2c00334

210231100212 has 96 divisors (see below), whose sum is σ = 590670151680. Its totient is φ = 56851839360.

The previous prime is 210231100153. The next prime is 210231100217. The reversal of 210231100212 is 212001132012.

It is a junction number, because it is equal to n+sod(n) for n = 210231100191 and 210231100200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210231100217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1674262 + ... + 1795442.

It is an arithmetic number, because the mean of its divisors is an integer number (6152814080).

Almost surely, 2210231100212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210231100212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295335075840).

210231100212 is an abundant number, since it is smaller than the sum of its proper divisors (380439051468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210231100212 is a wasteful number, since it uses less digits than its factorization.

210231100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122301 (or 122299 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 210231100212 its reverse (212001132012), we get a palindrome (422232232224).

The spelling of 210231100212 in words is "two hundred ten billion, two hundred thirty-one million, one hundred thousand, two hundred twelve".

Divisors: 1 2 3 4 6 7 12 14 19 21 28 38 42 57 76 84 114 133 228 266 399 532 798 1087 1596 2174 3261 4348 6522 7609 13044 15218 20653 22827 30436 41306 45654 61959 82612 91308 121181 123918 144571 242362 247836 289142 363543 433713 484724 578284 727086 848267 867426 1454172 1696534 1734852 2302439 2544801 3393068 4604878 5089602 6907317 9209756 10179204 13814634 16117073 27629268 32234146 48351219 64468292 96702438 131723747 193404876 263447494 395171241 526894988 790342482 922066229 1580684964 1844132458 2502751193 2766198687 3688264916 5005502386 5532397374 7508253579 10011004772 11064794748 15016507158 17519258351 30033014316 35038516702 52557775053 70077033404 105115550106 210231100212