220011091 has 4 divisors (see below), whose sum is σ = 225127672. Its totient is φ = 214894512.

The previous prime is 220011083. The next prime is 220011097. The reversal of 220011091 is 190110022.

220011091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 220011091 - 2³ = 220011083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220011097) 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, 2558226 + ... + 2558311.

It is an arithmetic number, because the mean of its divisors is an integer number (56281918).

Almost surely, 2^220011091 is an apocalyptic number.

220011091 is a deficient number, since it is larger than the sum of its proper divisors (5116581).

220011091 is an equidigital number, since it uses as much as digits as its factorization.

220011091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5116580.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 220011091 is about 14832.7708470130. The cubic root of 220011091 is about 603.6912180953.

The spelling of 220011091 in words is "two hundred twenty million, eleven thousand, ninety-one".