9921272275 has 24 divisors (see below), whose sum is σ = 13113843200. Its totient is φ = 7424071200.

The previous prime is 9921272243. The next prime is 9921272281. The reversal of 9921272275 is 5722721299.

It is a happy number.

It is not a de Polignac number, because 9921272275 - 2⁵ = 9921272243 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94671 + ... + 169720.

Almost surely, 2^9921272275 is an apocalyptic number.

9921272275 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

9921272275 is a deficient number, since it is larger than the sum of its proper divisors (3192570925).

9921272275 is a wasteful number, since it uses less digits than its factorization.

9921272275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264499 (or 264494 counting only the distinct ones).

The product of its digits is 317520, while the sum is 46.

The square root of 9921272275 is about 99605.5835533330. The cubic root of 9921272275 is about 2148.7659963977.

The spelling of 9921272275 in words is "nine billion, nine hundred twenty-one million, two hundred seventy-two thousand, two hundred seventy-five".