111121222101091 has 2 divisors, whose sum is σ = 111121222101092. Its totient is φ = 111121222101090.

The previous prime is 111121222101023. The next prime is 111121222101137. The reversal of 111121222101091 is 190101222121111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111121222101091 - 2¹³ = 111121222092899 is a prime.

It is not a weakly prime, because it can be changed into another prime (111121222101191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55560611050545 + 55560611050546.

It is an arithmetic number, because the mean of its divisors is an integer number (55560611050546).

Almost surely, 2^{111121222101091} is an apocalyptic number.

111121222101091 is a deficient number, since it is larger than the sum of its proper divisors (1).

111121222101091 is an equidigital number, since it uses as much as digits as its factorization.

111121222101091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 25.

The spelling of 111121222101091 in words is "one hundred eleven trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred one thousand, ninety-one".