2122221101999 has 2 divisors, whose sum is σ = 2122221102000. Its totient is φ = 2122221101998.

The previous prime is 2122221101993. The next prime is 2122221102017. The reversal of 2122221101999 is 9991011222212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2122221101999 - 2²⁸ = 2121952666543 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122221101993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061110550999 + 1061110551000.

It is an arithmetic number, because the mean of its divisors is an integer number (1061110551000).

Almost surely, 2^{2122221101999} is an apocalyptic number.

2122221101999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122221101999 is an equidigital number, since it uses as much as digits as its factorization.

2122221101999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 41.

The spelling of 2122221101999 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred one thousand, nine hundred ninety-nine".