122211221220112 has 20 divisors (see below), whose sum is σ = 236815508249740. Its totient is φ = 61097541671808.

The previous prime is 122211221220097. The next prime is 122211221220149. The reversal of 122211221220112 is 211022122112221.

It can be written as a sum of positive squares in 2 ways, for example, as 116674216909056 + 5537004311056 = 10801584^2 + 2353084^2 .

It is a super-2 number, since 2×122211221220112² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504183687 + ... + 504426022.

It is an arithmetic number, because the mean of its divisors is an integer number (11840775412487).

Almost surely, 2^{122211221220112} is an apocalyptic number.

It is an amenable number.

122211221220112 is a deficient number, since it is larger than the sum of its proper divisors (114604287029628).

122211221220112 is a wasteful number, since it uses less digits than its factorization.

122211221220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008617290 (or 1008617284 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 122211221220112 its reverse (211022122112221), we get a palindrome (333233343332333).

The spelling of 122211221220112 in words is "one hundred twenty-two trillion, two hundred eleven billion, two hundred twenty-one million, two hundred twenty thousand, one hundred twelve".