22221200002100 has 36 divisors (see below), whose sum is σ = 52603640734848. Its totient is φ = 8080436364000.

The previous prime is 22221200002081. The next prime is 22221200002187. The reversal of 22221200002100 is 120000212222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10100544356 + ... + 10100546555.

Almost surely, 2^{22221200002100} is an apocalyptic number.

22221200002100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221200002100 is an abundant number, since it is smaller than the sum of its proper divisors (30382440732748).

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

22221200002100 is a wasteful number, since it uses less digits than its factorization.

22221200002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20201090936 (or 20201090929 counting only the distinct ones).

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

Adding to 22221200002100 its reverse (120000212222), we get a palindrome (22341200214322).

It can be divided in two parts, 22 and 221200002100, that added together give a palindrome (221200002122).

The spelling of 22221200002100 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred million, two thousand, one hundred".