111401211203791 has 2 divisors, whose sum is σ = 111401211203792. Its totient is φ = 111401211203790.

The previous prime is 111401211203759. The next prime is 111401211203917. The reversal of 111401211203791 is 197302112104111.

Together with next prime (111401211203917) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111401211203791 - 2⁵ = 111401211203759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111401211207791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55700605601895 + 55700605601896.

It is an arithmetic number, because the mean of its divisors is an integer number (55700605601896).

Almost surely, 2^{111401211203791} is an apocalyptic number.

111401211203791 is a deficient number, since it is larger than the sum of its proper divisors (1).

111401211203791 is an equidigital number, since it uses as much as digits as its factorization.

111401211203791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 34.

The spelling of 111401211203791 in words is "one hundred eleven trillion, four hundred one billion, two hundred eleven million, two hundred three thousand, seven hundred ninety-one".