21722441683 has 2 divisors, whose sum is σ = 21722441684. Its totient is φ = 21722441682.

The previous prime is 21722441669. The next prime is 21722441707. The reversal of 21722441683 is 38614422712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21722441683 - 2²⁵ = 21688887251 is a prime.

It is not a weakly prime, because it can be changed into another prime (21722441633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10861220841 + 10861220842.

It is an arithmetic number, because the mean of its divisors is an integer number (10861220842).

Almost surely, 2^21722441683 is an apocalyptic number.

21722441683 is a deficient number, since it is larger than the sum of its proper divisors (1).

21722441683 is an equidigital number, since it uses as much as digits as its factorization.

21722441683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 40.

The spelling of 21722441683 in words is "twenty-one billion, seven hundred twenty-two million, four hundred forty-one thousand, six hundred eighty-three".