9112921 has 4 divisors (see below), whose sum is σ = 9241344. Its totient is φ = 8984500.

The previous prime is 9112919. The next prime is 9112949. The reversal of 9112921 is 1292119.

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.

It is a cyclic number.

It is not a de Polignac number, because 9112921 - 2¹ = 9112919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9112121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64105 + ... + 64246.

It is an arithmetic number, because the mean of its divisors is an integer number (2310336).

Almost surely, 2^9112921 is an apocalyptic number.

It is an amenable number.

9112921 is a deficient number, since it is larger than the sum of its proper divisors (128423).

9112921 is a wasteful number, since it uses less digits than its factorization.

9112921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128422.

The product of its digits is 324, while the sum is 25.

The square root of 9112921 is about 3018.7615010133. The cubic root of 9112921 is about 208.8747141032.

It can be divided in two parts, 91 and 12921, that multiplied together give a triangular number (1175811 = T₁₅₃₃).

The spelling of 9112921 in words is "nine million, one hundred twelve thousand, nine hundred twenty-one".