20112222021222 has 16 divisors (see below), whose sum is σ = 40224894216192. Its totient is φ = 6703998978120.

The previous prime is 20112222021193. The next prime is 20112222021239. The reversal of 20112222021222 is 22212022221102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18175054 + ... + 19249857.

It is an arithmetic number, because the mean of its divisors is an integer number (2514055888512).

Almost surely, 2^{20112222021222} is an apocalyptic number.

20112222021222 is an abundant number, since it is smaller than the sum of its proper divisors (20112672194970).

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

20112222021222 is a wasteful number, since it uses less digits than its factorization.

20112222021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37514483.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 20112222021222 its reverse (22212022221102), we get a palindrome (42324244242324).

The spelling of 20112222021222 in words is "twenty trillion, one hundred twelve billion, two hundred twenty-two million, twenty-one thousand, two hundred twenty-two".