11020091 has 2 divisors, whose sum is σ = 11020092. Its totient is φ = 11020090.

The previous prime is 11020081. The next prime is 11020109. The reversal of 11020091 is 19002011.

11020091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (11020109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11020091 - 2¹⁰ = 11019067 is a prime.

It is not a weakly prime, because it can be changed into another prime (11020001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510045 + 5510046.

It is an arithmetic number, because the mean of its divisors is an integer number (5510046).

Almost surely, 2^11020091 is an apocalyptic number.

11020091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11020091 is an equidigital number, since it uses as much as digits as its factorization.

11020091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 11020091 is about 3319.6522408228. The cubic root of 11020091 is about 222.5333266580.

The spelling of 11020091 in words is "eleven million, twenty thousand, ninety-one".