22521004899 has 32 divisors (see below), whose sum is σ = 31964135424. Its totient is φ = 14082193440.

The previous prime is 22521004897. The next prime is 22521004901. The reversal of 22521004899 is 99840012522.

It is a happy number.

It is a Cunningham number, because it is equal to 150070²-1.

It is an interprime number because it is at equal distance from previous prime (22521004897) and next prime (22521004901).

It is not a de Polignac number, because 22521004899 - 2¹ = 22521004897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22521004899.

It is not an unprimeable number, because it can be changed into a prime (22521004897) 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 31 ways as a sum of consecutive naturals, for example, 425202 + ... + 475224.

It is an arithmetic number, because the mean of its divisors is an integer number (998879232).

Almost surely, 2^22521004899 is an apocalyptic number.

22521004899 is a deficient number, since it is larger than the sum of its proper divisors (9443130525).

22521004899 is a wasteful number, since it uses less digits than its factorization.

22521004899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50207.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 22521004899 in words is "twenty-two billion, five hundred twenty-one million, four thousand, eight hundred ninety-nine".