1222122021112 has 16 divisors (see below), whose sum is σ = 2299751280360. Its totient is φ = 608855013024.

The previous prime is 1222122021089. The next prime is 1222122021139. The reversal of 1222122021112 is 2111202212221.

It is a self number, because there is not a number n which added to its sum of digits gives 1222122021112.

It is a congruent number.

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, 275747338 + ... + 275751769.

Almost surely, 2^{1222122021112} is an apocalyptic number.

It is an amenable number.

1222122021112 is a deficient number, since it is larger than the sum of its proper divisors (1077629259248).

1222122021112 is a wasteful number, since it uses less digits than its factorization.

1222122021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551499390 (or 551499386 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1222122021112 its reverse (2111202212221), we get a palindrome (3333324233333).

The spelling of 1222122021112 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-two million, twenty-one thousand, one hundred twelve".