22124232552521 has 4 divisors (see below), whose sum is σ = 24135526420944. Its totient is φ = 20112938684100.

The previous prime is 22124232552509. The next prime is 22124232552523. The reversal of 22124232552521 is 12525523242122.

It is a happy number.

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 22124232552521 - 2¹⁴ = 22124232536137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22124232552523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1005646934195 + ... + 1005646934216.

It is an arithmetic number, because the mean of its divisors is an integer number (6033881605236).

Almost surely, 2^{22124232552521} is an apocalyptic number.

It is an amenable number.

22124232552521 is a deficient number, since it is larger than the sum of its proper divisors (2011293868423).

22124232552521 is a wasteful number, since it uses less digits than its factorization.

22124232552521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011293868422.

The product of its digits is 192000, while the sum is 38.

Adding to 22124232552521 its reverse (12525523242122), we get a palindrome (34649755794643).

The spelling of 22124232552521 in words is "twenty-two trillion, one hundred twenty-four billion, two hundred thirty-two million, five hundred fifty-two thousand, five hundred twenty-one".