9424512121 has 4 divisors (see below), whose sum is σ = 9426799872. Its totient is φ = 9422224372.

The previous prime is 9424512113. The next prime is 9424512193. The reversal of 9424512121 is 1212154249.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1212154249 = 5113 ⋅237073.

It is a cyclic number.

It is not a de Polignac number, because 9424512121 - 2³ = 9424512113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9424572121) 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, 1137685 + ... + 1145938.

It is an arithmetic number, because the mean of its divisors is an integer number (2356699968).

Almost surely, 2^9424512121 is an apocalyptic number.

It is an amenable number.

9424512121 is a deficient number, since it is larger than the sum of its proper divisors (2287751).

9424512121 is a wasteful number, since it uses less digits than its factorization.

9424512121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287750.

The product of its digits is 5760, while the sum is 31.

The square root of 9424512121 is about 97079.9264575329. The cubic root of 9424512121 is about 2112.2871600791.

The spelling of 9424512121 in words is "nine billion, four hundred twenty-four million, five hundred twelve thousand, one hundred twenty-one".