16222917 has 4 divisors (see below), whose sum is σ = 21630560. Its totient is φ = 10815276.

The previous prime is 16222907. The next prime is 16222939. The reversal of 16222917 is 71922261.

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 not a de Polignac number, because 16222917 - 2¹⁹ = 15698629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16222907) 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, 2703817 + ... + 2703822.

It is an arithmetic number, because the mean of its divisors is an integer number (5407640).

Almost surely, 2^16222917 is an apocalyptic number.

It is an amenable number.

16222917 is a deficient number, since it is larger than the sum of its proper divisors (5407643).

16222917 is an equidigital number, since it uses as much as digits as its factorization.

16222917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5407642.

The product of its digits is 3024, while the sum is 30.

The square root of 16222917 is about 4027.7682406017. The cubic root of 16222917 is about 253.1490578567.

It can be divided in two parts, 1622 and 2917, that multiplied together give a palindrome (4731374).

The spelling of 16222917 in words is "sixteen million, two hundred twenty-two thousand, nine hundred seventeen".