2001222194717 has 2 divisors, whose sum is σ = 2001222194718. Its totient is φ = 2001222194716.

The previous prime is 2001222194711. The next prime is 2001222194831. The reversal of 2001222194717 is 7174912221002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1974752857081 + 26469337636 = 1405259^2 + 162694^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001222194717 - 2²² = 2001218000413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001222194711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000611097358 + 1000611097359.

It is an arithmetic number, because the mean of its divisors is an integer number (1000611097359).

Almost surely, 2^{2001222194717} is an apocalyptic number.

It is an amenable number.

2001222194717 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001222194717 is an equidigital number, since it uses as much as digits as its factorization.

2001222194717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 38.

The spelling of 2001222194717 in words is "two trillion, one billion, two hundred twenty-two million, one hundred ninety-four thousand, seven hundred seventeen".