111110102101091 has 2 divisors, whose sum is σ = 111110102101092. Its totient is φ = 111110102101090.

The previous prime is 111110102101087. The next prime is 111110102101189. The reversal of 111110102101091 is 190101201011111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111110102101091 - 2² = 111110102101087 is a prime.

It is not a weakly prime, because it can be changed into another prime (111110102101051) 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, 55555051050545 + 55555051050546.

It is an arithmetic number, because the mean of its divisors is an integer number (55555051050546).

Almost surely, 2^{111110102101091} is an apocalyptic number.

111110102101091 is a deficient number, since it is larger than the sum of its proper divisors (1).

111110102101091 is an equidigital number, since it uses as much as digits as its factorization.

111110102101091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 20.

It can be divided in two parts, 111110 and 102101091, that added together give a palindrome (102212201).

The spelling of 111110102101091 in words is "one hundred eleven trillion, one hundred ten billion, one hundred two million, one hundred one thousand, ninety-one".