2221335091 has 4 divisors (see below), whose sum is σ = 2230868952. Its totient is φ = 2211801232.

The previous prime is 2221335041. The next prime is 2221335113. The reversal of 2221335091 is 1905331222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1905331222 = 2 ⋅952665611.

It is a cyclic number.

It is not a de Polignac number, because 2221335091 - 2¹⁵ = 2221302323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221335001) 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, 4766581 + ... + 4767046.

It is an arithmetic number, because the mean of its divisors is an integer number (557717238).

Almost surely, 2^2221335091 is an apocalyptic number.

2221335091 is a deficient number, since it is larger than the sum of its proper divisors (9533861).

2221335091 is an equidigital number, since it uses as much as digits as its factorization.

2221335091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9533860.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 2221335091 is about 47131.0416922860. The cubic root of 2221335091 is about 1304.7822072112.

The spelling of 2221335091 in words is "two billion, two hundred twenty-one million, three hundred thirty-five thousand, ninety-one".