11101010101091 has 2 divisors, whose sum is σ = 11101010101092. Its totient is φ = 11101010101090.

The previous prime is 11101010101087. The next prime is 11101010101133. The reversal of 11101010101091 is 19010101010111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11101010101091 - 2² = 11101010101087 is a prime.

It is not a weakly prime, because it can be changed into another prime (11101010131091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550505050545 + 5550505050546.

It is an arithmetic number, because the mean of its divisors is an integer number (5550505050546).

Almost surely, 2^{11101010101091} is an apocalyptic number.

11101010101091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101010101091 is an equidigital number, since it uses as much as digits as its factorization.

11101010101091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 17.

The spelling of 11101010101091 in words is "eleven trillion, one hundred one billion, ten million, one hundred one thousand, ninety-one".