20122222022112 has 72 divisors (see below), whose sum is σ = 61444642260456. Its totient is φ = 5749206290688.

The previous prime is 20122222022101. The next prime is 20122222022137. The reversal of 20122222022112 is 21122022222102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2138836923 + ... + 2138846330.

It is an arithmetic number, because the mean of its divisors is an integer number (853397809173).

Almost surely, 2^{20122222022112} is an apocalyptic number.

It is an amenable number.

20122222022112 is an abundant number, since it is smaller than the sum of its proper divisors (41322420238344).

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

20122222022112 is a wasteful number, since it uses less digits than its factorization.

20122222022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4277683280 (or 4277683265 counting only the distinct ones).

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

Adding to 20122222022112 its reverse (21122022222102), we get a palindrome (41244244244214).

The spelling of 20122222022112 in words is "twenty trillion, one hundred twenty-two billion, two hundred twenty-two million, twenty-two thousand, one hundred twelve".