22012111221210 has 192 divisors, whose sum is σ = 65356093071360. Its totient is φ = 5091396912000.

The previous prime is 22012111221071. The next prime is 22012111221259. The reversal of 22012111221210 is 1212211121022.

22012111221210 is a `hidden beast` number, since 2 + 20 + 1 + 211 + 1 + 221 + 210 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2872000 + ... + 7229979.

It is an arithmetic number, because the mean of its divisors is an integer number (340396318080).

Almost surely, 2^{22012111221210} is an apocalyptic number.

22012111221210 is an abundant number, since it is smaller than the sum of its proper divisors (43343981850150).

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

22012111221210 is a wasteful number, since it uses less digits than its factorization.

22012111221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10102105 (or 10102102 counting only the distinct ones).

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

Adding to 22012111221210 its reverse (1212211121022), we get a palindrome (23224322342232).

The spelling of 22012111221210 in words is "twenty-two trillion, twelve billion, one hundred eleven million, two hundred twenty-one thousand, two hundred ten".