10117221 has 4 divisors (see below), whose sum is σ = 13489632. Its totient is φ = 6744812.

The previous prime is 10117207. The next prime is 10117231. The reversal of 10117221 is 12271101.

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 10117221 - 2⁵ = 10117189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10117221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10117231) 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, 1686201 + ... + 1686206.

It is an arithmetic number, because the mean of its divisors is an integer number (3372408).

Almost surely, 2^10117221 is an apocalyptic number.

It is an amenable number.

10117221 is a deficient number, since it is larger than the sum of its proper divisors (3372411).

10117221 is an equidigital number, since it uses as much as digits as its factorization.

10117221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3372410.

The product of its (nonzero) digits is 28, while the sum is 15.

The square root of 10117221 is about 3180.7579285447. The cubic root of 10117221 is about 216.2820176011.

Adding to 10117221 its reverse (12271101), we get a palindrome (22388322).

The spelling of 10117221 in words is "ten million, one hundred seventeen thousand, two hundred twenty-one".