22111200020 has 96 divisors (see below), whose sum is σ = 58315488000. Its totient is φ = 6997802112.

The previous prime is 22111200019. The next prime is 22111200043. The reversal of 22111200020 is 2000211122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22111199974 and 22111200010.

It is a congruent number.

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, 34790 + ... + 213149.

It is an arithmetic number, because the mean of its divisors is an integer number (607453000).

Almost surely, 2^22111200020 is an apocalyptic number.

22111200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22111200020 is an abundant number, since it is smaller than the sum of its proper divisors (36204287980).

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

22111200020 is a wasteful number, since it uses less digits than its factorization.

22111200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247982 (or 247966 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22111200020 its reverse (2000211122), we get a palindrome (24111411142).

The spelling of 22111200020 in words is "twenty-two billion, one hundred eleven million, two hundred thousand, twenty".