21100130983 has 2 divisors, whose sum is σ = 21100130984. Its totient is φ = 21100130982.

The previous prime is 21100130963. The next prime is 21100131029. The reversal of 21100130983 is 38903100112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21100130983 - 2⁵ = 21100130951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21100130903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550065491 + 10550065492.

It is an arithmetic number, because the mean of its divisors is an integer number (10550065492).

Almost surely, 2^21100130983 is an apocalyptic number.

21100130983 is a deficient number, since it is larger than the sum of its proper divisors (1).

21100130983 is an equidigital number, since it uses as much as digits as its factorization.

21100130983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 21100130983 in words is "twenty-one billion, one hundred million, one hundred thirty thousand, nine hundred eighty-three".