2001222120239 has 2 divisors, whose sum is σ = 2001222120240. Its totient is φ = 2001222120238.

The previous prime is 2001222120221. The next prime is 2001222120241. The reversal of 2001222120239 is 9320212221002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001222120239 - 2²⁸ = 2000953684783 is a prime.

Together with 2001222120241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001222120439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000611060119 + 1000611060120.

It is an arithmetic number, because the mean of its divisors is an integer number (1000611060120).

Almost surely, 2^{2001222120239} is an apocalyptic number.

2001222120239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001222120239 is an equidigital number, since it uses as much as digits as its factorization.

2001222120239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 2001222120239 in words is "two trillion, one billion, two hundred twenty-two million, one hundred twenty thousand, two hundred thirty-nine".