2124096921 has 12 divisors (see below), whose sum is σ = 3118438180. Its totient is φ = 1392850080.

The previous prime is 2124096901. The next prime is 2124096959. The reversal of 2124096921 is 1296904212.

It can be written as a sum of positive squares in 2 ways, for example, as 241491600 + 1882605321 = 15540^2 + 43389^2 .

It is not a de Polignac number, because 2124096921 - 2⁵ = 2124096889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2124096901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1933966 + ... + 1935063.

Almost surely, 2^2124096921 is an apocalyptic number.

It is an amenable number.

2124096921 is a deficient number, since it is larger than the sum of its proper divisors (994341259).

2124096921 is a wasteful number, since it uses less digits than its factorization.

2124096921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3869096 (or 3869093 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 2124096921 is about 46087.9259785033. The cubic root of 2124096921 is about 1285.4586463543.

The spelling of 2124096921 in words is "two billion, one hundred twenty-four million, ninety-six thousand, nine hundred twenty-one".