22465213 has 4 divisors (see below), whose sum is σ = 22474908. Its totient is φ = 22455520.

The previous prime is 22465207. The next prime is 22465217. The reversal of 22465213 is 31256422.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31256422 = 2 ⋅15628211.

It can be written as a sum of positive squares in 2 ways, for example, as 7387524 + 15077689 = 2718^2 + 3883^2 .

It is a cyclic number.

It is not a de Polignac number, because 22465213 - 2¹³ = 22457021 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 (22465217) 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, 903 + ... + 6763.

It is an arithmetic number, because the mean of its divisors is an integer number (5618727).

Almost surely, 2^22465213 is an apocalyptic number.

It is an amenable number.

22465213 is a deficient number, since it is larger than the sum of its proper divisors (9695).

22465213 is an equidigital number, since it uses as much as digits as its factorization.

22465213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9694.

The product of its digits is 2880, while the sum is 25.

The square root of 22465213 is about 4739.7482000630. The cubic root of 22465213 is about 282.1652410835.

The spelling of 22465213 in words is "twenty-two million, four hundred sixty-five thousand, two hundred thirteen".