10271921 has 4 divisors (see below), whose sum is σ = 11205744. Its totient is φ = 9338100.

The previous prime is 10271917. The next prime is 10271929. The reversal of 10271921 is 12917201.

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 10271921 - 2² = 10271917 is a prime.

It is a super-2 number, since 2×10271921² = 211024722060482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10271929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466895 + ... + 466916.

It is an arithmetic number, because the mean of its divisors is an integer number (2801436).

Almost surely, 2^10271921 is an apocalyptic number.

10271921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10271921 is a deficient number, since it is larger than the sum of its proper divisors (933823).

10271921 is an equidigital number, since it uses as much as digits as its factorization.

10271921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933822.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 10271921 is about 3204.9837753099. The cubic root of 10271921 is about 217.3788183014.

The spelling of 10271921 in words is "ten million, two hundred seventy-one thousand, nine hundred twenty-one".