22121120100100 has 36 divisors (see below), whose sum is σ = 54860377849984. Its totient is φ = 7584384034080.

The previous prime is 22121120100073. The next prime is 22121120100133. The reversal of 22121120100100 is 100102112122.

It is a super-3 number, since 3×22121120100100³ (a number of 41 digits) contains 333 as substring.

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, 15800799372 + ... + 15800800771.

Almost surely, 2^{22121120100100} is an apocalyptic number.

22121120100100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121120100100 is an abundant number, since it is smaller than the sum of its proper divisors (32739257749884).

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

22121120100100 is a wasteful number, since it uses less digits than its factorization.

22121120100100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31601600164 (or 31601600157 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22121120100100 its reverse (100102112122), we get a palindrome (22221222212222).

The spelling of 22121120100100 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred twenty million, one hundred thousand, one hundred".