21422315983 has 2 divisors, whose sum is σ = 21422315984. Its totient is φ = 21422315982.

The previous prime is 21422315977. The next prime is 21422316067. The reversal of 21422315983 is 38951322412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21422315983 - 2¹³ = 21422307791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21422315923) 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, 10711157991 + 10711157992.

It is an arithmetic number, because the mean of its divisors is an integer number (10711157992).

Almost surely, 2^21422315983 is an apocalyptic number.

21422315983 is a deficient number, since it is larger than the sum of its proper divisors (1).

21422315983 is an equidigital number, since it uses as much as digits as its factorization.

21422315983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 40.

The spelling of 21422315983 in words is "twenty-one billion, four hundred twenty-two million, three hundred fifteen thousand, nine hundred eighty-three".