1222120111122 has 24 divisors (see below), whose sum is σ = 2648785907664. Its totient is φ = 407241216504.

The previous prime is 1222120111111. The next prime is 1222120111129. The reversal of 1222120111122 is 2211110212221.

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 = 1222120111095 and 1222120111104.

It is not an unprimeable number, because it can be changed into a prime (1222120111129) 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, 10955788 + ... + 11066775.

It is an arithmetic number, because the mean of its divisors is an integer number (110366079486).

Almost surely, 2^{1222120111122} is an apocalyptic number.

1222120111122 is an abundant number, since it is smaller than the sum of its proper divisors (1426665796542).

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

1222120111122 is a wasteful number, since it uses less digits than its factorization.

1222120111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22025654 (or 22025651 counting only the distinct ones).

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

Adding to 1222120111122 its reverse (2211110212221), we get a palindrome (3433230323343).

The spelling of 1222120111122 in words is "one trillion, two hundred twenty-two billion, one hundred twenty million, one hundred eleven thousand, one hundred twenty-two".