991100110133211 has 32 divisors (see below), whose sum is σ = 1458644137617408. Its totient is φ = 594776013367680.

The previous prime is 991100110133207. The next prime is 991100110133213. The reversal of 991100110133211 is 112331011001199.

991100110133211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 991100110133211 - 2² = 991100110133207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (991100110133213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 975482095 + ... + 976497576.

It is an arithmetic number, because the mean of its divisors is an integer number (45582629300544).

Almost surely, 2^{991100110133211} is an apocalyptic number.

991100110133211 is a deficient number, since it is larger than the sum of its proper divisors (467544027484197).

991100110133211 is a wasteful number, since it uses less digits than its factorization.

991100110133211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951980011.

The product of its (nonzero) digits is 1458, while the sum is 33.

The spelling of 991100110133211 in words is "nine hundred ninety-one trillion, one hundred billion, one hundred ten million, one hundred thirty-three thousand, two hundred eleven".