21011012083 has 2 divisors, whose sum is σ = 21011012084. Its totient is φ = 21011012082.

The previous prime is 21011012039. The next prime is 21011012089. The reversal of 21011012083 is 38021011012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21011012083 - 2²⁵ = 20977457651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21011012083.

It is not a weakly prime, because it can be changed into another prime (21011012089) 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, 10505506041 + 10505506042.

It is an arithmetic number, because the mean of its divisors is an integer number (10505506042).

Almost surely, 2^21011012083 is an apocalyptic number.

21011012083 is a deficient number, since it is larger than the sum of its proper divisors (1).

21011012083 is an equidigital number, since it uses as much as digits as its factorization.

21011012083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 21011012083 its reverse (38021011012), we get a palindrome (59032023095).

The spelling of 21011012083 in words is "twenty-one billion, eleven million, twelve thousand, eighty-three".