21102122983 has 2 divisors, whose sum is σ = 21102122984. Its totient is φ = 21102122982.

The previous prime is 21102122917. The next prime is 21102123019. The reversal of 21102122983 is 38922120112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21102122983 - 2¹³ = 21102114791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21102122903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551061491 + 10551061492.

It is an arithmetic number, because the mean of its divisors is an integer number (10551061492).

Almost surely, 2^21102122983 is an apocalyptic number.

21102122983 is a deficient number, since it is larger than the sum of its proper divisors (1).

21102122983 is an equidigital number, since it uses as much as digits as its factorization.

21102122983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 21102122983 in words is "twenty-one billion, one hundred two million, one hundred twenty-two thousand, nine hundred eighty-three".