12110091921 has 48 divisors (see below), whose sum is σ = 18971971200. Its totient is φ = 7633489248.

The previous prime is 12110091913. The next prime is 12110091941. The reversal of 12110091921 is 12919001121.

It is not a de Polignac number, because 12110091921 - 2³ = 12110091913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12110091911) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7085215 + ... + 7086923.

It is an arithmetic number, because the mean of its divisors is an integer number (395249400).

Almost surely, 2^12110091921 is an apocalyptic number.

It is an amenable number.

12110091921 is a deficient number, since it is larger than the sum of its proper divisors (6861879279).

12110091921 is a wasteful number, since it uses less digits than its factorization.

12110091921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483 (or 2458 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 27.

The spelling of 12110091921 in words is "twelve billion, one hundred ten million, ninety-one thousand, nine hundred twenty-one".