221304131120 has 40 divisors (see below), whose sum is σ = 521580503616. Its totient is φ = 87309024768.

The previous prime is 221304131117. The next prime is 221304131141. The reversal of 221304131120 is 21131403122.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 221304131092 and 221304131101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18941432 + ... + 18953111.

Almost surely, 2^221304131120 is an apocalyptic number.

221304131120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221304131120 is an abundant number, since it is smaller than the sum of its proper divisors (300276372496).

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

221304131120 is a wasteful number, since it uses less digits than its factorization.

221304131120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37894629 (or 37894623 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221304131120 its reverse (21131403122), we get a palindrome (242435534242).

The spelling of 221304131120 in words is "two hundred twenty-one billion, three hundred four million, one hundred thirty-one thousand, one hundred twenty".