9227715121 has 2 divisors, whose sum is σ = 9227715122. Its totient is φ = 9227715120.

The previous prime is 9227715089. The next prime is 9227715151. The reversal of 9227715121 is 1215177229.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8214884496 + 1012830625 = 90636^2 + 31825^2 .

It is a cyclic number.

It is not a de Polignac number, because 9227715121 - 2⁵ = 9227715089 is a prime.

It is not a weakly prime, because it can be changed into another prime (9227715151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4613857560 + 4613857561.

It is an arithmetic number, because the mean of its divisors is an integer number (4613857561).

Almost surely, 2^9227715121 is an apocalyptic number.

It is an amenable number.

9227715121 is a deficient number, since it is larger than the sum of its proper divisors (1).

9227715121 is an equidigital number, since it uses as much as digits as its factorization.

9227715121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 37.

The square root of 9227715121 is about 96060.9968769844. The cubic root of 9227715121 is about 2097.4811160158.

The spelling of 9227715121 in words is "nine billion, two hundred twenty-seven million, seven hundred fifteen thousand, one hundred twenty-one".