22057921393 has 2 divisors, whose sum is σ = 22057921394. Its totient is φ = 22057921392.

The previous prime is 22057921343. The next prime is 22057921397. The reversal of 22057921393 is 39312975022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18277147249 + 3780774144 = 135193^2 + 61488^2 .

It is a cyclic number.

It is not a de Polignac number, because 22057921393 - 2⁹ = 22057920881 is a prime.

It is not a weakly prime, because it can be changed into another prime (22057921397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11028960696 + 11028960697.

It is an arithmetic number, because the mean of its divisors is an integer number (11028960697).

Almost surely, 2^22057921393 is an apocalyptic number.

It is an amenable number.

22057921393 is a deficient number, since it is larger than the sum of its proper divisors (1).

22057921393 is an equidigital number, since it uses as much as digits as its factorization.

22057921393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 43.

The spelling of 22057921393 in words is "twenty-two billion, fifty-seven million, nine hundred twenty-one thousand, three hundred ninety-three".