22021202212100 has 144 divisors (see below), whose sum is σ = 59165730317568. Its totient is φ = 6927614415360.

The previous prime is 22021202212099. The next prime is 22021202212123. The reversal of 22021202212100 is 121220212022.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5725547 + ... + 8764946.

Almost surely, 2^{22021202212100} is an apocalyptic number.

22021202212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021202212100 is an abundant number, since it is smaller than the sum of its proper divisors (37144528105468).

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

22021202212100 is a wasteful number, since it uses less digits than its factorization.

22021202212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14490694 (or 14490687 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22021202212100 its reverse (121220212022), we get a palindrome (22142422424122).

The spelling of 22021202212100 in words is "twenty-two trillion, twenty-one billion, two hundred two million, two hundred twelve thousand, one hundred".