12401899231 has 2 divisors, whose sum is σ = 12401899232. Its totient is φ = 12401899230.

The previous prime is 12401899229. The next prime is 12401899303. The reversal of 12401899231 is 13299810421.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12401899231 - 2¹ = 12401899229 is a prime.

It is a super-2 number, since 2×12401899231² (a number of 21 digits) contains 22 as substring.

Together with 12401899229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12401899331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200949615 + 6200949616.

It is an arithmetic number, because the mean of its divisors is an integer number (6200949616).

Almost surely, 2^12401899231 is an apocalyptic number.

12401899231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12401899231 is an equidigital number, since it uses as much as digits as its factorization.

12401899231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 40.

The spelling of 12401899231 in words is "twelve billion, four hundred one million, eight hundred ninety-nine thousand, two hundred thirty-one".