232120222440 has 64 divisors (see below), whose sum is σ = 713345088960. Its totient is φ = 60388999680.

The previous prime is 232120222423. The next prime is 232120222469. The reversal of 232120222440 is 44222021232.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 232120222440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23584534 + ... + 23594373.

It is an arithmetic number, because the mean of its divisors is an integer number (11146017015).

Almost surely, 2^232120222440 is an apocalyptic number.

232120222440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

232120222440 is an abundant number, since it is smaller than the sum of its proper divisors (481224866520).

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

232120222440 is a wasteful number, since it uses less digits than its factorization.

232120222440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47178962 (or 47178958 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 232120222440 its reverse (44222021232), we get a palindrome (276342243672).

The spelling of 232120222440 in words is "two hundred thirty-two billion, one hundred twenty million, two hundred twenty-two thousand, four hundred forty".