21121413232100 has 72 divisors (see below), whose sum is σ = 45856852973568. Its totient is φ = 8444255910400.

The previous prime is 21121413232099. The next prime is 21121413232121. The reversal of 21121413232100 is 123231412112.

It is a super-2 number, since 2×21121413232100² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2821074557 + ... + 2821082043.

It is an arithmetic number, because the mean of its divisors is an integer number (636900735744).

Almost surely, 2^{21121413232100} is an apocalyptic number.

21121413232100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21121413232100 is an abundant number, since it is smaller than the sum of its proper divisors (24735439741468).

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

21121413232100 is a wasteful number, since it uses less digits than its factorization.

21121413232100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18125 (or 18118 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 21121413232100 its reverse (123231412112), we get a palindrome (21244644644212).

The spelling of 21121413232100 in words is "twenty-one trillion, one hundred twenty-one billion, four hundred thirteen million, two hundred thirty-two thousand, one hundred".