10912421921 has 4 divisors (see below), whose sum is σ = 11386875072. Its totient is φ = 10437968772.

The previous prime is 10912421903. The next prime is 10912421959. The reversal of 10912421921 is 12912421901.

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 10912421921 - 2²⁶ = 10845313057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10912421021) 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, 237226541 + ... + 237226586.

It is an arithmetic number, because the mean of its divisors is an integer number (2846718768).

Almost surely, 2^10912421921 is an apocalyptic number.

It is an amenable number.

10912421921 is a deficient number, since it is larger than the sum of its proper divisors (474453151).

10912421921 is an equidigital number, since it uses as much as digits as its factorization.

10912421921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474453150.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 10912421921 in words is "ten billion, nine hundred twelve million, four hundred twenty-one thousand, nine hundred twenty-one".