2111200021169 has 2 divisors, whose sum is σ = 2111200021170. Its totient is φ = 2111200021168.

The previous prime is 2111200021093. The next prime is 2111200021171. The reversal of 2111200021169 is 9611200021112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1493254672144 + 617945349025 = 1221988^2 + 786095^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111200021169 - 2⁸ = 2111200020913 is a prime.

It is a super-2 number, since 2×2111200021169² (a number of 25 digits) contains 22 as substring.

Together with 2111200021171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2111200621169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055600010584 + 1055600010585.

It is an arithmetic number, because the mean of its divisors is an integer number (1055600010585).

Almost surely, 2^{2111200021169} is an apocalyptic number.

It is an amenable number.

2111200021169 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111200021169 is an equidigital number, since it uses as much as digits as its factorization.

2111200021169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 2111200021169 in words is "two trillion, one hundred eleven billion, two hundred million, twenty-one thousand, one hundred sixty-nine".