11011211122091 has 2 divisors, whose sum is σ = 11011211122092. Its totient is φ = 11011211122090.

The previous prime is 11011211122073. The next prime is 11011211122123. The reversal of 11011211122091 is 19022111211011.

It is a weak prime.

It is an emirp because it is prime and its reverse (19022111211011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11011211122091 - 2¹⁸ = 11011210859947 is a prime.

It is not a weakly prime, because it can be changed into another prime (11011211125091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505605561045 + 5505605561046.

It is an arithmetic number, because the mean of its divisors is an integer number (5505605561046).

Almost surely, 2^{11011211122091} is an apocalyptic number.

11011211122091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011211122091 is an equidigital number, since it uses as much as digits as its factorization.

11011211122091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 23.

The spelling of 11011211122091 in words is "eleven trillion, eleven billion, two hundred eleven million, one hundred twenty-two thousand, ninety-one".