22101100020 has 96 divisors (see below), whose sum is σ = 70436096640. Its totient is φ = 5749873920.

The previous prime is 22101100009. The next prime is 22101100031. The reversal of 22101100020 is 2000110122.

It is an interprime number because it is at equal distance from previous prime (22101100009) and next prime (22101100031).

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 = 22101099975 and 22101100011.

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, 476982 + ... + 521261.

It is an arithmetic number, because the mean of its divisors is an integer number (733709340).

Almost surely, 2^22101100020 is an apocalyptic number.

22101100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22101100020 is an abundant number, since it is smaller than the sum of its proper divisors (48334996620).

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

22101100020 is a wasteful number, since it uses less digits than its factorization.

22101100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998302 (or 998294 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 22101100020 its reverse (2000110122), we get a palindrome (24101210142).

The spelling of 22101100020 in words is "twenty-two billion, one hundred one million, one hundred thousand, twenty".