221331310120 has 32 divisors (see below), whose sum is σ = 519647425920. Its totient is φ = 84683283520.

The previous prime is 221331310103. The next prime is 221331310141. The reversal of 221331310120 is 21013133122.

It is a super-2 number, since 2×221331310120² (a number of 23 digits) contains 22 as substring.

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, 120287836 + ... + 120289675.

It is an arithmetic number, because the mean of its divisors is an integer number (16238982060).

Almost surely, 2^221331310120 is an apocalyptic number.

221331310120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221331310120 is an abundant number, since it is smaller than the sum of its proper divisors (298316115800).

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

221331310120 is a wasteful number, since it uses less digits than its factorization.

221331310120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240577545 (or 240577541 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 221331310120 its reverse (21013133122), we get a palindrome (242344443242).

The spelling of 221331310120 in words is "two hundred twenty-one billion, three hundred thirty-one million, three hundred ten thousand, one hundred twenty".