22010221020 has 96 divisors (see below), whose sum is σ = 61916037120. Its totient is φ = 5842094080.

The previous prime is 22010221007. The next prime is 22010221039. The reversal of 22010221020 is 2012201022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 22010220987 and 22010221005.

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, 21347905 + ... + 21348935.

It is an arithmetic number, because the mean of its divisors is an integer number (644958720).

Almost surely, 2^22010221020 is an apocalyptic number.

22010221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22010221020 is an abundant number, since it is smaller than the sum of its proper divisors (39905816100).

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

22010221020 is a wasteful number, since it uses less digits than its factorization.

22010221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355 (or 2353 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22010221020 its reverse (2012201022), we get a palindrome (24022422042).

The spelling of 22010221020 in words is "twenty-two billion, ten million, two hundred twenty-one thousand, twenty".