12351175421 has 16 divisors (see below), whose sum is σ = 14218122240. Its totient is φ = 10639390080.

The previous prime is 12351175363. The next prime is 12351175471. The reversal of 12351175421 is 12457115321.

It is a cyclic number.

It is not a de Polignac number, because 12351175421 - 2⁶ = 12351175357 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 (12351175471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 491501 + ... + 516018.

It is an arithmetic number, because the mean of its divisors is an integer number (888632640).

Almost surely, 2^12351175421 is an apocalyptic number.

It is an amenable number.

12351175421 is a deficient number, since it is larger than the sum of its proper divisors (1866946819).

12351175421 is a wasteful number, since it uses less digits than its factorization.

12351175421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007596.

The product of its digits is 8400, while the sum is 32.

The spelling of 12351175421 in words is "twelve billion, three hundred fifty-one million, one hundred seventy-five thousand, four hundred twenty-one".