12357475321 has 12 divisors (see below), whose sum is σ = 13395784212. Its totient is φ = 11360057856.

The previous prime is 12357475309. The next prime is 12357475327.

It is a happy number.

12357475321 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 7045252096 + 5312223225 = 83936^2 + 72885^2 .

It is not a de Polignac number, because 12357475321 - 2²¹ = 12355378169 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12357475327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165136 + ... + 228001.

It is an arithmetic number, because the mean of its divisors is an integer number (1116315351).

Almost surely, 2^12357475321 is an apocalyptic number.

It is an amenable number.

12357475321 is a deficient number, since it is larger than the sum of its proper divisors (1038308891).

12357475321 is an equidigital number, since it uses as much as digits as its factorization.

12357475321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393240 (or 393197 counting only the distinct ones).

The product of its digits is 176400, while the sum is 40.

The spelling of 12357475321 in words is "twelve billion, three hundred fifty-seven million, four hundred seventy-five thousand, three hundred twenty-one".