22521254215 has 16 divisors (see below), whose sum is σ = 27301344480. Its totient is φ = 17833219200.

The previous prime is 22521254209. The next prime is 22521254219. The reversal of 22521254215 is 51245212522.

It is not a de Polignac number, because 22521254215 - 2⁵ = 22521254183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22521254219) 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 15 ways as a sum of consecutive naturals, for example, 2914537 + ... + 2922253.

It is an arithmetic number, because the mean of its divisors is an integer number (1706334030).

Almost surely, 2^22521254215 is an apocalyptic number.

22521254215 is a deficient number, since it is larger than the sum of its proper divisors (4780090265).

22521254215 is a wasteful number, since it uses less digits than its factorization.

22521254215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13602.

The product of its digits is 16000, while the sum is 31.

Adding to 22521254215 its reverse (51245212522), we get a palindrome (73766466737).

The spelling of 22521254215 in words is "twenty-two billion, five hundred twenty-one million, two hundred fifty-four thousand, two hundred fifteen".