10162221 has 4 divisors (see below), whose sum is σ = 13549632. Its totient is φ = 6774812.

The previous prime is 10162211. The next prime is 10162223. The reversal of 10162221 is 12226101.

10162221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 10162221 - 2⁵ = 10162189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10162221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10162223) 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, 1693701 + ... + 1693706.

It is an arithmetic number, because the mean of its divisors is an integer number (3387408).

Almost surely, 2^10162221 is an apocalyptic number.

It is an amenable number.

10162221 is a deficient number, since it is larger than the sum of its proper divisors (3387411).

10162221 is an equidigital number, since it uses as much as digits as its factorization.

10162221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3387410.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 10162221 is about 3187.8238658997. The cubic root of 10162221 is about 216.6022075180.

Adding to 10162221 its reverse (12226101), we get a palindrome (22388322).

The spelling of 10162221 in words is "ten million, one hundred sixty-two thousand, two hundred twenty-one".