22221202100020 has 96 divisors (see below), whose sum is σ = 60708675557376. Its totient is φ = 6624954652800.

The previous prime is 22221202099933. The next prime is 22221202100051. The reversal of 22221202100020 is 2000120212222.

It is a junction number, because it is equal to n+sod(n) for n = 22221202099967 and 22221202100003.

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, 313646146 + ... + 313716985.

It is an arithmetic number, because the mean of its divisors is an integer number (632382037056).

Almost surely, 2^{22221202100020} is an apocalyptic number.

22221202100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221202100020 is an abundant number, since it is smaller than the sum of its proper divisors (38487473457356).

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

22221202100020 is a wasteful number, since it uses less digits than its factorization.

22221202100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627363181 (or 627363179 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22221202100020 its reverse (2000120212222), we get a palindrome (24221322312242).

The spelling of 22221202100020 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred two million, one hundred thousand, twenty".