22021112211020 has 48 divisors (see below), whose sum is σ = 51408095225088. Its totient is φ = 7868585998080.

The previous prime is 22021112211011. The next prime is 22021112211023. The reversal of 22021112211020 is 2011221112022.

It is a self number, because there is not a number n which added to its sum of digits gives 22021112211020.

It is not an unprimeable number, because it can be changed into a prime (22021112211023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1366065899 + ... + 1366082018.

It is an arithmetic number, because the mean of its divisors is an integer number (1071001983856).

Almost surely, 2^{22021112211020} is an apocalyptic number.

22021112211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021112211020 is an abundant number, since it is smaller than the sum of its proper divisors (29386983014068).

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

22021112211020 is a wasteful number, since it uses less digits than its factorization.

22021112211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732147970 (or 2732147968 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22021112211020 its reverse (2011221112022), we get a palindrome (24032333323042).

The spelling of 22021112211020 in words is "twenty-two trillion, twenty-one billion, one hundred twelve million, two hundred eleven thousand, twenty".