22521004901 has 2 divisors, whose sum is σ = 22521004902. Its totient is φ = 22521004900.

The previous prime is 22521004897. The next prime is 22521004903. The reversal of 22521004901 is 10940012522.

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

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22521004900 + 1 = 150070^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 22521004901 - 2² = 22521004897 is a prime.

Together with 22521004903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22521004903) 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 as a sum of consecutive naturals, namely, 11260502450 + 11260502451.

It is an arithmetic number, because the mean of its divisors is an integer number (11260502451).

Almost surely, 2^22521004901 is an apocalyptic number.

It is an amenable number.

22521004901 is a deficient number, since it is larger than the sum of its proper divisors (1).

22521004901 is an equidigital number, since it uses as much as digits as its factorization.

22521004901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The spelling of 22521004901 in words is "twenty-two billion, five hundred twenty-one million, four thousand, nine hundred one".