21102047683 has 2 divisors, whose sum is σ = 21102047684. Its totient is φ = 21102047682.

The previous prime is 21102047677. The next prime is 21102047723. The reversal of 21102047683 is 38674020112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21102047683 - 2²⁹ = 20565176771 is a prime.

It is not a weakly prime, because it can be changed into another prime (21132047683) 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, 10551023841 + 10551023842.

It is an arithmetic number, because the mean of its divisors is an integer number (10551023842).

Almost surely, 2^21102047683 is an apocalyptic number.

21102047683 is a deficient number, since it is larger than the sum of its proper divisors (1).

21102047683 is an equidigital number, since it uses as much as digits as its factorization.

21102047683 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

Adding to 21102047683 its reverse (38674020112), we get a palindrome (59776067795).

The spelling of 21102047683 in words is "twenty-one billion, one hundred two million, forty-seven thousand, six hundred eighty-three".