22100021202020 has 12 divisors (see below), whose sum is σ = 46410044524284. Its totient is φ = 8840008480800.

The previous prime is 22100021202019. The next prime is 22100021202053. The reversal of 22100021202020 is 2020212000122.

It can be written as a sum of positive squares in 2 ways, for example, as 11683858803556 + 10416162398464 = 3418166^2 + 3227408^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22100021201986 and 22100021202004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552500530031 + ... + 552500530070.

It is an arithmetic number, because the mean of its divisors is an integer number (3867503710357).

Almost surely, 2^{22100021202020} is an apocalyptic number.

22100021202020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22100021202020 is an abundant number, since it is smaller than the sum of its proper divisors (24310023322264).

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

22100021202020 is a wasteful number, since it uses less digits than its factorization.

22100021202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105001060110 (or 1105001060108 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22100021202020 its reverse (2020212000122), we get a palindrome (24120233202142).

The spelling of 22100021202020 in words is "twenty-two trillion, one hundred billion, twenty-one million, two hundred two thousand, twenty".