21322858093 has 2 divisors, whose sum is σ = 21322858094. Its totient is φ = 21322858092.

The previous prime is 21322858033. The next prime is 21322858127. The reversal of 21322858093 is 39085822312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21195574569 + 127283524 = 145587^2 + 11282^2 .

It is a cyclic number.

It is not a de Polignac number, because 21322858093 - 2⁹ = 21322857581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21322858013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10661429046 + 10661429047.

It is an arithmetic number, because the mean of its divisors is an integer number (10661429047).

Almost surely, 2^21322858093 is an apocalyptic number.

It is an amenable number.

21322858093 is a deficient number, since it is larger than the sum of its proper divisors (1).

21322858093 is an equidigital number, since it uses as much as digits as its factorization.

21322858093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 21322858093 in words is "twenty-one billion, three hundred twenty-two million, eight hundred fifty-eight thousand, ninety-three".