22121303400220 has 24 divisors (see below), whose sum is σ = 46454942520000. Its totient is φ = 8848482240192.

The previous prime is 22121303400187. The next prime is 22121303400233. The reversal of 22121303400220 is 2200430312122.

It is a junction number, because it is equal to n+sod(n) for n = 22121303400191 and 22121303400200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2428861 + ... + 7081099.

It is an arithmetic number, because the mean of its divisors is an integer number (1935622605000).

Almost surely, 2^{22121303400220} is an apocalyptic number.

22121303400220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121303400220 is an abundant number, since it is smaller than the sum of its proper divisors (24333639119780).

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

22121303400220 is a wasteful number, since it uses less digits than its factorization.

22121303400220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4889997 (or 4889995 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 22121303400220 its reverse (2200430312122), we get a palindrome (24321733712342).

The spelling of 22121303400220 in words is "twenty-two trillion, one hundred twenty-one billion, three hundred three million, four hundred thousand, two hundred twenty".