22121120211020 has 24 divisors (see below), whose sum is σ = 46455164627424. Its totient is φ = 8848293382656.

The previous prime is 22121120210999. The next prime is 22121120211023. The reversal of 22121120211020 is 2011202112122.

It is a self number, because there is not a number n which added to its sum of digits gives 22121120211020.

It is not an unprimeable number, because it can be changed into a prime (22121120211023) 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, 8492837 + ... + 10787516.

It is an arithmetic number, because the mean of its divisors is an integer number (1935631859476).

Almost surely, 2^{22121120211020} is an apocalyptic number.

22121120211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121120211020 is an abundant number, since it is smaller than the sum of its proper divisors (24334044416404).

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

22121120211020 is a wasteful number, since it uses less digits than its factorization.

22121120211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19337729 (or 19337727 counting only the distinct ones).

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

Adding to 22121120211020 its reverse (2011202112122), we get a palindrome (24132322323142).

The spelling of 22121120211020 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred twenty million, two hundred eleven thousand, twenty".