2100122222212 has 36 divisors (see below), whose sum is σ = 4282924523724. Its totient is φ = 898436441280.

The previous prime is 2100122222201. The next prime is 2100122222213. The reversal of 2100122222212 is 2122222210012.

It can be written as a sum of positive squares in 2 ways, for example, as 92839652416 + 2007282569796 = 304696^2 + 1416786^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2100122222212.

It is not an unprimeable number, because it can be changed into a prime (2100122222213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9509239 + ... + 9727582.

It is an arithmetic number, because the mean of its divisors is an integer number (118970125659).

Almost surely, 2^{2100122222212} is an apocalyptic number.

It is an amenable number.

2100122222212 is an abundant number, since it is smaller than the sum of its proper divisors (2182802301512).

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

2100122222212 is a wasteful number, since it uses less digits than its factorization.

2100122222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19237396 (or 19237387 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2100122222212 its reverse (2122222210012), we get a palindrome (4222344432224).

The spelling of 2100122222212 in words is "two trillion, one hundred billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred twelve".