221232120113100 has 144 divisors (see below), whose sum is σ = 677758385749536. Its totient is φ = 55524327936000.

The previous prime is 221232120113063. The next prime is 221232120113111. The reversal of 221232120113100 is 1311021232122.

It is a super-2 number, since 2×221232120113100² (a number of 29 digits) contains 22 as substring.

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, 655798470 + ... + 656135730.

It is an arithmetic number, because the mean of its divisors is an integer number (4706655456594).

Almost surely, 2^{221232120113100} is an apocalyptic number.

221232120113100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221232120113100 is an abundant number, since it is smaller than the sum of its proper divisors (456526265636436).

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

221232120113100 is a wasteful number, since it uses less digits than its factorization.

221232120113100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465916 (or 465909 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 221232120113100 its reverse (1311021232122), we get a palindrome (222543141345222).

The spelling of 221232120113100 in words is "two hundred twenty-one trillion, two hundred thirty-two billion, one hundred twenty million, one hundred thirteen thousand, one hundred".