232123210221 has 32 divisors (see below), whose sum is σ = 365188128768. Its totient is φ = 128339680320.

The previous prime is 232123210199. The next prime is 232123210223. The reversal of 232123210221 is 122012321232.

It is not a de Polignac number, because 232123210221 - 2⁷ = 232123210093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232123210223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3911050 + ... + 3969956.

It is an arithmetic number, because the mean of its divisors is an integer number (11412129024).

Almost surely, 2^232123210221 is an apocalyptic number.

232123210221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

232123210221 is a deficient number, since it is larger than the sum of its proper divisors (133064918547).

232123210221 is a wasteful number, since it uses less digits than its factorization.

232123210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65001.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 232123210221 its reverse (122012321232), we get a palindrome (354135531453).

The spelling of 232123210221 in words is "two hundred thirty-two billion, one hundred twenty-three million, two hundred ten thousand, two hundred twenty-one".