22124399 has 4 divisors (see below), whose sum is σ = 24135720. Its totient is φ = 20113080.

The previous prime is 22124363. The next prime is 22124411. The reversal of 22124399 is 99342122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22124399 - 2⁸ = 22124143 is a prime.

It is a super-2 number, since 2×22124399² = 978978062222402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22124309) 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, 1005644 + ... + 1005665.

It is an arithmetic number, because the mean of its divisors is an integer number (6033930).

Almost surely, 2^22124399 is an apocalyptic number.

22124399 is a deficient number, since it is larger than the sum of its proper divisors (2011321).

22124399 is a wasteful number, since it uses less digits than its factorization.

22124399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011320.

The product of its digits is 7776, while the sum is 32.

The square root of 22124399 is about 4703.6580445436. The cubic root of 22124399 is about 280.7310784425.

It can be divided in two parts, 22 and 124399, that added together give a palindrome (124421).

The spelling of 22124399 in words is "twenty-two million, one hundred twenty-four thousand, three hundred ninety-nine".