21110202200039 has 2 divisors, whose sum is σ = 21110202200040. Its totient is φ = 21110202200038.

The previous prime is 21110202199991. The next prime is 21110202200047. The reversal of 21110202200039 is 93000220201112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21110202200039 - 2⁸ = 21110202199783 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 21110202199987 and 21110202200023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21110202200239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555101100019 + 10555101100020.

It is an arithmetic number, because the mean of its divisors is an integer number (10555101100020).

Almost surely, 2^{21110202200039} is an apocalyptic number.

21110202200039 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110202200039 is an equidigital number, since it uses as much as digits as its factorization.

21110202200039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 21110202200039 in words is "twenty-one trillion, one hundred ten billion, two hundred two million, two hundred thousand, thirty-nine".