22021221122112 has 56 divisors (see below), whose sum is σ = 59252014490400. Its totient is φ = 7215993358336.

The previous prime is 22021221122101. The next prime is 22021221122113. The reversal of 22021221122112 is 21122112212022.

It is not an unprimeable number, because it can be changed into a prime (22021221122113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971970537 + ... + 971993192.

Almost surely, 2^{22021221122112} is an apocalyptic number.

It is an amenable number.

22021221122112 is an abundant number, since it is smaller than the sum of its proper divisors (37230793368288).

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

22021221122112 is a wasteful number, since it uses less digits than its factorization.

22021221122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943963803 (or 1943963793 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22021221122112 its reverse (21122112212022), we get a palindrome (43143333334134).

The spelling of 22021221122112 in words is "twenty-two trillion, twenty-one billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred twelve".