21322307999 has 2 divisors, whose sum is σ = 21322308000. Its totient is φ = 21322307998.

The previous prime is 21322307989. The next prime is 21322308011. The reversal of 21322307999 is 99970322312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21322307999 - 2²⁴ = 21305530783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21322307939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10661153999 + 10661154000.

It is an arithmetic number, because the mean of its divisors is an integer number (10661154000).

Almost surely, 2^21322307999 is an apocalyptic number.

21322307999 is a deficient number, since it is larger than the sum of its proper divisors (1).

21322307999 is an equidigital number, since it uses as much as digits as its factorization.

21322307999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 47.

The spelling of 21322307999 in words is "twenty-one billion, three hundred twenty-two million, three hundred seven thousand, nine hundred ninety-nine".