22091701 has 4 divisors (see below), whose sum is σ = 22688812. Its totient is φ = 21494592.

The previous prime is 22091683. The next prime is 22091717. The reversal of 22091701 is 10719022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21150801 + 940900 = 4599^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 22091701 - 2¹¹ = 22089653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22091761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298500 + ... + 298573.

It is an arithmetic number, because the mean of its divisors is an integer number (5672203).

Almost surely, 2^22091701 is an apocalyptic number.

It is an amenable number.

22091701 is a deficient number, since it is larger than the sum of its proper divisors (597111).

22091701 is an equidigital number, since it uses as much as digits as its factorization.

22091701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597110.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 22091701 is about 4700.1809539634. The cubic root of 22091701 is about 280.5927112848.

The spelling of 22091701 in words is "twenty-two million, ninety-one thousand, seven hundred one".