2101111199959 has 2 divisors, whose sum is σ = 2101111199960. Its totient is φ = 2101111199958.

The previous prime is 2101111199921. The next prime is 2101111200011. The reversal of 2101111199959 is 9599911111012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2101111199959 - 2¹⁵ = 2101111167191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101111199459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050555599979 + 1050555599980.

It is an arithmetic number, because the mean of its divisors is an integer number (1050555599980).

Almost surely, 2^{2101111199959} is an apocalyptic number.

2101111199959 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101111199959 is an equidigital number, since it uses as much as digits as its factorization.

2101111199959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65610, while the sum is 49.

The spelling of 2101111199959 in words is "two trillion, one hundred one billion, one hundred eleven million, one hundred ninety-nine thousand, nine hundred fifty-nine".