111012221211191 has 2 divisors, whose sum is σ = 111012221211192. Its totient is φ = 111012221211190.

The previous prime is 111012221211137. The next prime is 111012221211223. The reversal of 111012221211191 is 191112122210111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111012221211191 - 2⁶ = 111012221211127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111012221211191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111012221241191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55506110605595 + 55506110605596.

It is an arithmetic number, because the mean of its divisors is an integer number (55506110605596).

Almost surely, 2^{111012221211191} is an apocalyptic number.

111012221211191 is a deficient number, since it is larger than the sum of its proper divisors (1).

111012221211191 is an equidigital number, since it uses as much as digits as its factorization.

111012221211191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 26.

The spelling of 111012221211191 in words is "one hundred eleven trillion, twelve billion, two hundred twenty-one million, two hundred eleven thousand, one hundred ninety-one".