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210011122212020 = 225312461113763261
BaseRepresentation
bin101111110000000100000110…
…010101101001110010110100
31000112120212102012021020000022
4233300010012111221302310
5210011310234241241040
62022353435550104312
762143542246141203
oct5760040625516264
91015525365236008
10210011122212020
1160a09242567928
121b67968baab098
139024c6b76173c
1439c0841d5723a
151942d106626b5
hexbf0106569cb4

210011122212020 has 48 divisors (see below), whose sum is σ = 455268447438336. Its totient is φ = 81291318864000.

The previous prime is 210011122212007. The next prime is 210011122212181. The reversal of 210011122212020 is 20212221110012.

It is a self number, because there is not a number n which added to its sum of digits gives 210011122212020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8377190 + ... + 22140450.

It is an arithmetic number, because the mean of its divisors is an integer number (9484759321632).

Almost surely, 2210011122212020 is an apocalyptic number.

210011122212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210011122212020 is an abundant number, since it is smaller than the sum of its proper divisors (245257325226316).

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

210011122212020 is a wasteful number, since it uses less digits than its factorization.

210011122212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13787912 (or 13787910 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210011122212020 its reverse (20212221110012), we get a palindrome (230223343322032).

The spelling of 210011122212020 in words is "two hundred ten trillion, eleven billion, one hundred twenty-two million, two hundred twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 24611 49222 98444 123055 246110 492220 762941 1525882 3051764 3814705 7629410 13763261 15258820 27526522 55053044 68816305 137632610 275265220 426661091 853322182 1706644364 2133305455 4266610910 8533221820 338727616471 677455232942 1354910465884 1693638082355 3387276164710 6774552329420 10500556110601 21001112221202 42002224442404 52502780553005 105005561106010 210011122212020