221130010320 has 160 divisors (see below), whose sum is σ = 687671402880. Its totient is φ = 58781859840.

The previous prime is 221130010303. The next prime is 221130010333. The reversal of 221130010320 is 23010031122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 221130010320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167395260 + ... + 167396580.

It is an arithmetic number, because the mean of its divisors is an integer number (4297946268).

Almost surely, 2^221130010320 is an apocalyptic number.

221130010320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221130010320 is an abundant number, since it is smaller than the sum of its proper divisors (466541392560).

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

221130010320 is a wasteful number, since it uses less digits than its factorization.

221130010320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013 (or 3007 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 221130010320 its reverse (23010031122), we get a palindrome (244140041442).

The spelling of 221130010320 in words is "two hundred twenty-one billion, one hundred thirty million, ten thousand, three hundred twenty".