1220122111112 has 16 divisors (see below), whose sum is σ = 2291297967900. Its totient is φ = 609109319680.

The previous prime is 1220122111069. The next prime is 1220122111129. The reversal of 1220122111112 is 2111112210221.

It can be written as a sum of positive squares in 2 ways, for example, as 804311223556 + 415810887556 = 896834^2 + 644834^2 .

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, 118961537 + ... + 118971792.

Almost surely, 2^{1220122111112} is an apocalyptic number.

It is an amenable number.

1220122111112 is a deficient number, since it is larger than the sum of its proper divisors (1071175856788).

1220122111112 is a wasteful number, since it uses less digits than its factorization.

1220122111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237933976 (or 237933972 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1220122111112 its reverse (2111112210221), we get a palindrome (3331234321333).

The spelling of 1220122111112 in words is "one trillion, two hundred twenty billion, one hundred twenty-two million, one hundred eleven thousand, one hundred twelve".