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210212200020 = 22359679361973
BaseRepresentation
bin1100001111000110011…
…1111001111001010100
3202002121001100012022210
43003301213321321110
511421003310400040
6240323052553420
721121153134624
oct3036147717124
9662531305283
10210212200020
1181172341229
12348a7782870
1316a90c75994
14a2624c0884
155704c9b480
hex30f19f9e54

210212200020 has 48 divisors (see below), whose sum is σ = 588656597760. Its totient is φ = 56050640256.

The previous prime is 210212200013. The next prime is 210212200021. The reversal of 210212200020 is 20002212012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 210212199969 and 210212200005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210212200021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399754 + ... + 761726.

It is an arithmetic number, because the mean of its divisors is an integer number (12263679120).

Almost surely, 2210212200020 is an apocalyptic number.

210212200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210212200020 is an abundant number, since it is smaller than the sum of its proper divisors (378444397740).

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

210212200020 is a wasteful number, since it uses less digits than its factorization.

210212200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371664 (or 371662 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 210212200020 its reverse (20002212012), we get a palindrome (230214412032).

The spelling of 210212200020 in words is "two hundred ten billion, two hundred twelve million, two hundred thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 9679 19358 29037 38716 48395 58074 96790 116148 145185 193580 290370 361973 580740 723946 1085919 1447892 1809865 2171838 3619730 4343676 5429595 7239460 10859190 21718380 3503536667 7007073334 10510610001 14014146668 17517683335 21021220002 35035366670 42042440004 52553050005 70070733340 105106100010 210212200020