12232023221 has 12 divisors (see below), whose sum is σ = 13575665376. Its totient is φ = 11012048520.

The previous prime is 12232023179. The next prime is 12232023233.

It is a happy number.

12232023221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12232023221 - 2⁶ = 12232023157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12232023193 and 12232023202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12232023521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 478271 + ... + 503196.

It is an arithmetic number, because the mean of its divisors is an integer number (1131305448).

Almost surely, 2^12232023221 is an apocalyptic number.

12232023221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12232023221 is a deficient number, since it is larger than the sum of its proper divisors (1343642155).

12232023221 is a wasteful number, since it uses less digits than its factorization.

12232023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981592 (or 981581 counting only the distinct ones).

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

It can be divided in two parts, 122320 and 23221, that added together give a palindrome (145541).

The spelling of 12232023221 in words is "twelve billion, two hundred thirty-two million, twenty-three thousand, two hundred twenty-one".