221332303120 has 40 divisors (see below), whose sum is σ = 514874467800. Its totient is φ = 88485288960.

The previous prime is 221332303091. The next prime is 221332303139. The reversal of 221332303120 is 21303233122.

It can be written as a sum of positive squares in 4 ways, for example, as 1543861264 + 219788441856 = 39292^2 + 468816^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 221332303091 and 221332303100.

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, 594445 + ... + 892204.

It is an arithmetic number, because the mean of its divisors is an integer number (12871861695).

Almost surely, 2^221332303120 is an apocalyptic number.

221332303120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221332303120 is an abundant number, since it is smaller than the sum of its proper divisors (293542164680).

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

221332303120 is a wasteful number, since it uses less digits than its factorization.

221332303120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488523 (or 1488517 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 221332303120 its reverse (21303233122), we get a palindrome (242635536242).

The spelling of 221332303120 in words is "two hundred twenty-one billion, three hundred thirty-two million, three hundred three thousand, one hundred twenty".