22200012020 has 96 divisors (see below), whose sum is σ = 51085956096. Its totient is φ = 8067225600.

The previous prime is 22200012019. The next prime is 22200012031. The reversal of 22200012020 is 2021000222.

It is a junction number, because it is equal to n+sod(n) for n = 22200011992 and 22200012010.

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, 4434839 + ... + 4439841.

It is an arithmetic number, because the mean of its divisors is an integer number (532145376).

Almost surely, 2^22200012020 is an apocalyptic number.

22200012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22200012020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25542978048).

22200012020 is an abundant number, since it is smaller than the sum of its proper divisors (28885944076).

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

22200012020 is a wasteful number, since it uses less digits than its factorization.

22200012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5481 (or 5479 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 22200012020 its reverse (2021000222), we get a palindrome (24221012242).

The spelling of 22200012020 in words is "twenty-two billion, two hundred million, twelve thousand, twenty".