12250465921 has 4 divisors (see below), whose sum is σ = 12251545344. Its totient is φ = 12249386500.

The previous prime is 12250465907. The next prime is 12250465933. The reversal of 12250465921 is 12956405221.

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 12250465921 - 2¹¹ = 12250463873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12250765921) 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, 522505 + ... + 545446.

It is an arithmetic number, because the mean of its divisors is an integer number (3062886336).

Almost surely, 2^12250465921 is an apocalyptic number.

It is an amenable number.

12250465921 is a deficient number, since it is larger than the sum of its proper divisors (1079423).

12250465921 is a wasteful number, since it uses less digits than its factorization.

12250465921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079422.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 12250465921 in words is "twelve billion, two hundred fifty million, four hundred sixty-five thousand, nine hundred twenty-one".