21711020083 has 2 divisors, whose sum is σ = 21711020084. Its totient is φ = 21711020082.

The previous prime is 21711020017. The next prime is 21711020087. The reversal of 21711020083 is 38002011712.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21711020083 - 2¹³ = 21711011891 is a prime.

It is not a weakly prime, because it can be changed into another prime (21711020087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10855510041 + 10855510042.

It is an arithmetic number, because the mean of its divisors is an integer number (10855510042).

Almost surely, 2^21711020083 is an apocalyptic number.

21711020083 is a deficient number, since it is larger than the sum of its proper divisors (1).

21711020083 is an equidigital number, since it uses as much as digits as its factorization.

21711020083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 21711020083 its reverse (38002011712), we get a palindrome (59713031795).

The spelling of 21711020083 in words is "twenty-one billion, seven hundred eleven million, twenty thousand, eighty-three".