22100200020 has 72 divisors (see below), whose sum is σ = 68596303776. Its totient is φ = 5756329152.

The previous prime is 22100200019. The next prime is 22100200051. The reversal of 22100200020 is 2000200122.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 22100199975 and 22100200011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1419922 + ... + 1435401.

Almost surely, 2^22100200020 is an apocalyptic number.

22100200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22100200020 is an abundant number, since it is smaller than the sum of its proper divisors (46496103756).

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

22100200020 is a wasteful number, since it uses less digits than its factorization.

22100200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855381 (or 2855376 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 22100200020 its reverse (2000200122), we get a palindrome (24100400142).

The spelling of 22100200020 in words is "twenty-two billion, one hundred million, two hundred thousand, twenty".