12231312001 has 2 divisors, whose sum is σ = 12231312002. Its totient is φ = 12231312000.

The previous prime is 12231311993. The next prime is 12231312011. The reversal of 12231312001 is 10021313221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12017421376 + 213890625 = 109624^2 + 14625^2 .

It is a cyclic number.

It is not a de Polignac number, because 12231312001 - 2³ = 12231311993 is a prime.

It is not a weakly prime, because it can be changed into another prime (12231312011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115656000 + 6115656001.

It is an arithmetic number, because the mean of its divisors is an integer number (6115656001).

Almost surely, 2^12231312001 is an apocalyptic number.

It is an amenable number.

12231312001 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231312001 is an equidigital number, since it uses as much as digits as its factorization.

12231312001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12231312001 its reverse (10021313221), we get a palindrome (22252625222).

The spelling of 12231312001 in words is "twelve billion, two hundred thirty-one million, three hundred twelve thousand, one".