21100403083 has 2 divisors, whose sum is σ = 21100403084. Its totient is φ = 21100403082.

The previous prime is 21100403081. The next prime is 21100403131. The reversal of 21100403083 is 38030400112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21100403083 - 2¹ = 21100403081 is a prime.

Together with 21100403081, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21100403081) 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, 10550201541 + 10550201542.

It is an arithmetic number, because the mean of its divisors is an integer number (10550201542).

Almost surely, 2^21100403083 is an apocalyptic number.

21100403083 is a deficient number, since it is larger than the sum of its proper divisors (1).

21100403083 is an equidigital number, since it uses as much as digits as its factorization.

21100403083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21100403083 its reverse (38030400112), we get a palindrome (59130803195).

The spelling of 21100403083 in words is "twenty-one billion, one hundred million, four hundred three thousand, eighty-three".