22421524105021 has 2 divisors, whose sum is σ = 22421524105022. Its totient is φ = 22421524105020.

The previous prime is 22421524105003. The next prime is 22421524105031. The reversal of 22421524105021 is 12050142512422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22418236344100 + 3287760921 = 4734790^2 + 57339^2 .

It is a cyclic number.

It is not a de Polignac number, because 22421524105021 - 2⁹ = 22421524104509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22421524105031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11210762052510 + 11210762052511.

It is an arithmetic number, because the mean of its divisors is an integer number (11210762052511).

Almost surely, 2^{22421524105021} is an apocalyptic number.

It is an amenable number.

22421524105021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22421524105021 is an equidigital number, since it uses as much as digits as its factorization.

22421524105021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12800, while the sum is 31.

Adding to 22421524105021 its reverse (12050142512422), we get a palindrome (34471666617443).

The spelling of 22421524105021 in words is "twenty-two trillion, four hundred twenty-one billion, five hundred twenty-four million, one hundred five thousand, twenty-one".