22121001111020 has 96 divisors (see below), whose sum is σ = 53137493240832. Its totient is φ = 7577618727168.

The previous prime is 22121001110981. The next prime is 22121001111043. The reversal of 22121001111020 is 2011110012122.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 22121001110986 and 22121001111004.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 991650707 + ... + 991673013.

It is an arithmetic number, because the mean of its divisors is an integer number (553515554592).

Almost surely, 2^{22121001111020} is an apocalyptic number.

22121001111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121001111020 is an abundant number, since it is smaller than the sum of its proper divisors (31016492129812).

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

22121001111020 is a wasteful number, since it uses less digits than its factorization.

22121001111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28287 (or 28285 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22121001111020 its reverse (2011110012122), we get a palindrome (24132111123142).

The spelling of 22121001111020 in words is "twenty-two trillion, one hundred twenty-one billion, one million, one hundred eleven thousand, twenty".