220999996005917 has 2 divisors, whose sum is σ = 220999996005918. Its totient is φ = 220999996005916.

The previous prime is 220999996005911. The next prime is 220999996005931. The reversal of 220999996005917 is 719500699999022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170762718599641 + 50237277406276 = 13067621^2 + 7087826^2 .

It is a cyclic number.

It is not a de Polignac number, because 220999996005917 - 2¹⁸ = 220999995743773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220999996005911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110499998002958 + 110499998002959.

It is an arithmetic number, because the mean of its divisors is an integer number (110499998002959).

Almost surely, 2^{220999996005917} is an apocalyptic number.

It is an amenable number.

220999996005917 is a deficient number, since it is larger than the sum of its proper divisors (1).

220999996005917 is an equidigital number, since it uses as much as digits as its factorization.

220999996005917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 446410440, while the sum is 77.

The spelling of 220999996005917 in words is "two hundred twenty trillion, nine hundred ninety-nine billion, nine hundred ninety-six million, five thousand, nine hundred seventeen".