11082220891 has 4 divisors (see below), whose sum is σ = 12665395312. Its totient is φ = 9499046472.

The previous prime is 11082220889. The next prime is 11082220913. The reversal of 11082220891 is 19802228011.

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 11082220891 - 2¹ = 11082220889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11082229891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 791587200 + ... + 791587213.

It is an arithmetic number, because the mean of its divisors is an integer number (3166348828).

Almost surely, 2^11082220891 is an apocalyptic number.

11082220891 is a deficient number, since it is larger than the sum of its proper divisors (1583174421).

11082220891 is an equidigital number, since it uses as much as digits as its factorization.

11082220891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583174420.

The product of its (nonzero) digits is 4608, while the sum is 34.

The spelling of 11082220891 in words is "eleven billion, eighty-two million, two hundred twenty thousand, eight hundred ninety-one".