22111102220020 has 48 divisors (see below), whose sum is σ = 51146316643968. Its totient is φ = 7962338655360.

The previous prime is 22111102219951. The next prime is 22111102220029. The reversal of 22111102220020 is 2002220111122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22111102219976 and 22111102220003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111102220029) 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, 487865739 + ... + 487911058.

It is an arithmetic number, because the mean of its divisors is an integer number (1065548263416).

Almost surely, 2^{22111102220020} is an apocalyptic number.

22111102220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22111102220020 is an abundant number, since it is smaller than the sum of its proper divisors (29035214423948).

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

22111102220020 is a wasteful number, since it uses less digits than its factorization.

22111102220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975776920 (or 975776918 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22111102220020 its reverse (2002220111122), we get a palindrome (24113322331142).

The spelling of 22111102220020 in words is "twenty-two trillion, one hundred eleven billion, one hundred two million, two hundred twenty thousand, twenty".