232121220320 has 96 divisors (see below), whose sum is σ = 603728627040. Its totient is φ = 83633264640.

The previous prime is 232121220313. The next prime is 232121220329. The reversal of 232121220320 is 23022121232.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 232121220292 and 232121220301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232121220329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 413147 + ... + 796826.

It is an arithmetic number, because the mean of its divisors is an integer number (6288839865).

Almost surely, 2^232121220320 is an apocalyptic number.

232121220320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

232121220320 is an abundant number, since it is smaller than the sum of its proper divisors (371607406720).

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

232121220320 is a wasteful number, since it uses less digits than its factorization.

232121220320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210108 (or 1210100 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 232121220320 its reverse (23022121232), we get a palindrome (255143341552).

The spelling of 232121220320 in words is "two hundred thirty-two billion, one hundred twenty-one million, two hundred twenty thousand, three hundred twenty".