1101012111191 has 2 divisors, whose sum is σ = 1101012111192. Its totient is φ = 1101012111190.

The previous prime is 1101012111127. The next prime is 1101012111233. The reversal of 1101012111191 is 1911112101011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1101012111191 - 2⁶ = 1101012111127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101012111391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550506055595 + 550506055596.

It is an arithmetic number, because the mean of its divisors is an integer number (550506055596).

Almost surely, 2^{1101012111191} is an apocalyptic number.

1101012111191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101012111191 is an equidigital number, since it uses as much as digits as its factorization.

1101012111191 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.

The spelling of 1101012111191 in words is "one trillion, one hundred one billion, twelve million, one hundred eleven thousand, one hundred ninety-one".