20112222221022 has 32 divisors (see below), whose sum is σ = 40406220675072. Its totient is φ = 6673780115424.

The previous prime is 20112222221011. The next prime is 20112222221071. The reversal of 20112222221022 is 22012222221102.

It is a super-2 number, since 2×20112222221022² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20112222221022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40868128 + ... + 41357324.

It is an arithmetic number, because the mean of its divisors is an integer number (1262694396096).

Almost surely, 2^{20112222221022} is an apocalyptic number.

20112222221022 is an abundant number, since it is smaller than the sum of its proper divisors (20293998454050).

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

20112222221022 is a wasteful number, since it uses less digits than its factorization.

20112222221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520152.

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

Adding to 20112222221022 its reverse (22012222221102), we get a palindrome (42124444442124).

The spelling of 20112222221022 in words is "twenty trillion, one hundred twelve billion, two hundred twenty-two million, two hundred twenty-one thousand, twenty-two".