72223232120 has 64 divisors (see below), whose sum is σ = 181037052000. Its totient is φ = 25747481088.

The previous prime is 72223232119. The next prime is 72223232131. The reversal of 72223232120 is 2123232227.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 72223232120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2379590 + ... + 2409749.

Almost surely, 2^72223232120 is an apocalyptic number.

It is an amenable number.

72223232120 is an abundant number, since it is smaller than the sum of its proper divisors (108813819880).

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

72223232120 is a wasteful number, since it uses less digits than its factorization.

72223232120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4789392 (or 4789388 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

Adding to 72223232120 its reverse (2123232227), we get a palindrome (74346464347).

The spelling of 72223232120 in words is "seventy-two billion, two hundred twenty-three million, two hundred thirty-two thousand, one hundred twenty".