21200022020239 has 2 divisors, whose sum is σ = 21200022020240. Its totient is φ = 21200022020238.

The previous prime is 21200022020209. The next prime is 21200022020249. The reversal of 21200022020239 is 93202022000212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21200022020239 - 2¹¹ = 21200022018191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21200022020209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600011010119 + 10600011010120.

It is an arithmetic number, because the mean of its divisors is an integer number (10600011010120).

Almost surely, 2^{21200022020239} is an apocalyptic number.

21200022020239 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200022020239 is an equidigital number, since it uses as much as digits as its factorization.

21200022020239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The spelling of 21200022020239 in words is "twenty-one trillion, two hundred billion, twenty-two million, twenty thousand, two hundred thirty-nine".