111444140522191 has 2 divisors, whose sum is σ = 111444140522192. Its totient is φ = 111444140522190.

The previous prime is 111444140522173. The next prime is 111444140522227. The reversal of 111444140522191 is 191225041444111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111444140522191 - 2¹⁷ = 111444140391119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111444140522791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55722070261095 + 55722070261096.

It is an arithmetic number, because the mean of its divisors is an integer number (55722070261096).

Almost surely, 2^{111444140522191} is an apocalyptic number.

111444140522191 is a deficient number, since it is larger than the sum of its proper divisors (1).

111444140522191 is an equidigital number, since it uses as much as digits as its factorization.

111444140522191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 40.

The spelling of 111444140522191 in words is "one hundred eleven trillion, four hundred forty-four billion, one hundred forty million, five hundred twenty-two thousand, one hundred ninety-one".