11221100011091 has 4 divisors (see below), whose sum is σ = 11228056677312. Its totient is φ = 11214143344872.

The previous prime is 11221100011087. The next prime is 11221100011097. The reversal of 11221100011091 is 19011000112211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11221100011091 - 2² = 11221100011087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221100011097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3478330691 + ... + 3478333916.

It is an arithmetic number, because the mean of its divisors is an integer number (2807014169328).

Almost surely, 2^{11221100011091} is an apocalyptic number.

11221100011091 is a deficient number, since it is larger than the sum of its proper divisors (6956666221).

11221100011091 is an equidigital number, since it uses as much as digits as its factorization.

11221100011091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6956666220.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 11221100011091 in words is "eleven trillion, two hundred twenty-one billion, one hundred million, eleven thousand, ninety-one".