111002102120191 has 2 divisors, whose sum is σ = 111002102120192. Its totient is φ = 111002102120190.

The previous prime is 111002102120099. The next prime is 111002102120201. The reversal of 111002102120191 is 191021201200111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111002102120191 - 2³⁵ = 110967742381823 is a prime.

It is a super-2 number, since 2×111002102120191² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111002102121191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55501051060095 + 55501051060096.

It is an arithmetic number, because the mean of its divisors is an integer number (55501051060096).

Almost surely, 2^{111002102120191} is an apocalyptic number.

111002102120191 is a deficient number, since it is larger than the sum of its proper divisors (1).

111002102120191 is an equidigital number, since it uses as much as digits as its factorization.

111002102120191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 111002102120191 in words is "one hundred eleven trillion, two billion, one hundred two million, one hundred twenty thousand, one hundred ninety-one".