21022209983 has 2 divisors, whose sum is σ = 21022209984. Its totient is φ = 21022209982.

The previous prime is 21022209977. The next prime is 21022209991. The reversal of 21022209983 is 38990222012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21022209983 - 2²⁰ = 21021161407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21022209953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511104991 + 10511104992.

It is an arithmetic number, because the mean of its divisors is an integer number (10511104992).

Almost surely, 2^21022209983 is an apocalyptic number.

21022209983 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022209983 is an equidigital number, since it uses as much as digits as its factorization.

21022209983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 21022209983 in words is "twenty-one billion, twenty-two million, two hundred nine thousand, nine hundred eighty-three".