12210111221022 has 96 divisors (see below), whose sum is σ = 32431599922176. Its totient is φ = 3266919374400.

The previous prime is 12210111221017. The next prime is 12210111221071. The reversal of 12210111221022 is 22012211101221.

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

It is a junction number, because it is equal to n+sod(n) for n = 12210111220986 and 12210111221004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103063254 + ... + 103181657.

It is an arithmetic number, because the mean of its divisors is an integer number (337829165856).

Almost surely, 2^{12210111221022} is an apocalyptic number.

12210111221022 is an abundant number, since it is smaller than the sum of its proper divisors (20221488701154).

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

12210111221022 is a wasteful number, since it uses less digits than its factorization.

12210111221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206244966 (or 206244963 counting only the distinct ones).

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

Adding to 12210111221022 its reverse (22012211101221), we get a palindrome (34222322322243).

The spelling of 12210111221022 in words is "twelve trillion, two hundred ten billion, one hundred eleven million, two hundred twenty-one thousand, twenty-two".