22124010521 has 2 divisors, whose sum is σ = 22124010522. Its totient is φ = 22124010520.

The previous prime is 22124010487. The next prime is 22124010527. The reversal of 22124010521 is 12501042122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15131706121 + 6992304400 = 123011^2 + 83620^2 .

It is a cyclic number.

It is not a de Polignac number, because 22124010521 - 2¹⁸ = 22123748377 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22124010493 and 22124010502.

It is not a weakly prime, because it can be changed into another prime (22124010527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11062005260 + 11062005261.

It is an arithmetic number, because the mean of its divisors is an integer number (11062005261).

Almost surely, 2^22124010521 is an apocalyptic number.

It is an amenable number.

22124010521 is a deficient number, since it is larger than the sum of its proper divisors (1).

22124010521 is an equidigital number, since it uses as much as digits as its factorization.

22124010521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 22124010521 its reverse (12501042122), we get a palindrome (34625052643).

The spelling of 22124010521 in words is "twenty-two billion, one hundred twenty-four million, ten thousand, five hundred twenty-one".