22021449253 has 2 divisors, whose sum is σ = 22021449254. Its totient is φ = 22021449252.

The previous prime is 22021449227. The next prime is 22021449269. The reversal of 22021449253 is 35294412022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13957768449 + 8063680804 = 118143^2 + 89798^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22021449253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22021449553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010724626 + 11010724627.

It is an arithmetic number, because the mean of its divisors is an integer number (11010724627).

Almost surely, 2^22021449253 is an apocalyptic number.

It is an amenable number.

22021449253 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021449253 is an equidigital number, since it uses as much as digits as its factorization.

22021449253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 22021449253 in words is "twenty-two billion, twenty-one million, four hundred forty-nine thousand, two hundred fifty-three".