22124621 has 8 divisors (see below), whose sum is σ = 22555200. Its totient is φ = 21697632.

The previous prime is 22124611. The next prime is 22124623. The reversal of 22124621 is 12642122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22124621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22124593 and 22124602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22124623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13766 + ... + 15288.

It is an arithmetic number, because the mean of its divisors is an integer number (2819400).

Almost surely, 2^22124621 is an apocalyptic number.

It is an amenable number.

22124621 is a deficient number, since it is larger than the sum of its proper divisors (430579).

22124621 is a wasteful number, since it uses less digits than its factorization.

22124621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795.

The product of its digits is 384, while the sum is 20.

The square root of 22124621 is about 4703.6816431387. The cubic root of 22124621 is about 280.7320174072.

Adding to 22124621 its reverse (12642122), we get a palindrome (34766743).

It can be divided in two parts, 221 and 24621, that added together give a palindrome (24842).

The spelling of 22124621 in words is "twenty-two million, one hundred twenty-four thousand, six hundred twenty-one".