22211102121210 has 48 divisors (see below), whose sum is σ = 59309645673096. Its totient is φ = 5762880549504.

The previous prime is 22211102121193. The next prime is 22211102121211. The reversal of 22211102121210 is 1212120111222.

22211102121210 is a `hidden beast` number, since 2 + 221 + 110 + 2 + 121 + 210 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 22196225196369 + 14876924841 = 4711287^2 + 121971^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22211102121211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3334996989 + ... + 3335003648.

Almost surely, 2^{22211102121210} is an apocalyptic number.

22211102121210 is an abundant number, since it is smaller than the sum of its proper divisors (37098543551886).

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

22211102121210 is a wasteful number, since it uses less digits than its factorization.

22211102121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6670000687 (or 6670000684 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22211102121210 its reverse (1212120111222), we get a palindrome (23423222232432).

The spelling of 22211102121210 in words is "twenty-two trillion, two hundred eleven billion, one hundred two million, one hundred twenty-one thousand, two hundred ten".