12131233401 has 64 divisors (see below), whose sum is σ = 19538804736. Its totient is φ = 6549984000.

The previous prime is 12131233393. The next prime is 12131233417. The reversal of 12131233401 is 10433213121.

It is not a de Polignac number, because 12131233401 - 2³ = 12131233393 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (12131233001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6380551 + ... + 6382451.

It is an arithmetic number, because the mean of its divisors is an integer number (305293824).

Almost surely, 2^12131233401 is an apocalyptic number.

It is an amenable number.

12131233401 is a deficient number, since it is larger than the sum of its proper divisors (7407571335).

12131233401 is a wasteful number, since it uses less digits than its factorization.

12131233401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2182.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 12131233401 its reverse (10433213121), we get a palindrome (22564446522).

The spelling of 12131233401 in words is "twelve billion, one hundred thirty-one million, two hundred thirty-three thousand, four hundred one".