2123791227 has 24 divisors (see below), whose sum is σ = 3210105600. Its totient is φ = 1350481968.

The previous prime is 2123791223. The next prime is 2123791237. The reversal of 2123791227 is 7221973212.

It is not a de Polignac number, because 2123791227 - 2² = 2123791223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2123791191 and 2123791200.

It is not an unprimeable number, because it can be changed into a prime (2123791223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60024 + ... + 88602.

It is an arithmetic number, because the mean of its divisors is an integer number (133754400).

Almost surely, 2^2123791227 is an apocalyptic number.

2123791227 is a deficient number, since it is larger than the sum of its proper divisors (1086314373).

2123791227 is a wasteful number, since it uses less digits than its factorization.

2123791227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28967 (or 28964 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 2123791227 is about 46084.6094374250. The cubic root of 2123791227 is about 1285.3969768759.

The spelling of 2123791227 in words is "two billion, one hundred twenty-three million, seven hundred ninety-one thousand, two hundred twenty-seven".