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2012210102220 = 2235102533270929
BaseRepresentation
bin11101010010000001000…
…100010111111111001100
321010100212101022022101020
4131102001010113333030
5230432001241232340
64140221353514140
7265243304442513
oct35220104277714
97110771268336
102012210102220
1170641216535a
12285b91112950
1311799b0ac426
146d56a35d67a
153751ee009d0
hex1d481117fcc

2012210102220 has 48 divisors (see below), whose sum is σ = 5634739524960. Its totient is φ = 536536861696.

The previous prime is 2012210102219. The next prime is 2012210102281. The reversal of 2012210102220 is 222010122102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2012210102220.

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, 1020285 + ... + 2250644.

It is an arithmetic number, because the mean of its divisors is an integer number (117390406770).

Almost surely, 22012210102220 is an apocalyptic number.

2012210102220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012210102220 is an abundant number, since it is smaller than the sum of its proper divisors (3622529422740).

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

2012210102220 is a wasteful number, since it uses less digits than its factorization.

2012210102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3281194 (or 3281192 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2012210102220 its reverse (222010122102), we get a palindrome (2234220224322).

The spelling of 2012210102220 in words is "two trillion, twelve billion, two hundred ten million, one hundred two thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 10253 20506 30759 41012 51265 61518 102530 123036 153795 205060 307590 615180 3270929 6541858 9812787 13083716 16354645 19625574 32709290 39251148 49063935 65418580 98127870 196255740 33536835037 67073670074 100610505111 134147340148 167684175185 201221010222 335368350370 402442020444 503052525555 670736700740 1006105051110 2012210102220