12401551241 has 4 divisors (see below), whose sum is σ = 12403042512. Its totient is φ = 12400059972.

The previous prime is 12401551231. The next prime is 12401551277. The reversal of 12401551241 is 14215510421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12401551241 - 2²⁶ = 12334442377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12401551241.

It is not an unprimeable number, because it can be changed into a prime (12401551231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 733091 + ... + 749816.

It is an arithmetic number, because the mean of its divisors is an integer number (3100760628).

Almost surely, 2^12401551241 is an apocalyptic number.

It is an amenable number.

12401551241 is a deficient number, since it is larger than the sum of its proper divisors (1491271).

12401551241 is an equidigital number, since it uses as much as digits as its factorization.

12401551241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491270.

The product of its (nonzero) digits is 1600, while the sum is 26.

The spelling of 12401551241 in words is "twelve billion, four hundred one million, five hundred fifty-one thousand, two hundred forty-one".