22422091 has 4 divisors (see below), whose sum is σ = 22593384. Its totient is φ = 22250800.

The previous prime is 22422089. The next prime is 22422097. The reversal of 22422091 is 19022422.

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 22422091 - 2¹ = 22422089 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22422097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85450 + ... + 85711.

It is an arithmetic number, because the mean of its divisors is an integer number (5648346).

Almost surely, 2^22422091 is an apocalyptic number.

22422091 is a deficient number, since it is larger than the sum of its proper divisors (171293).

22422091 is a wasteful number, since it uses less digits than its factorization.

22422091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171292.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 22422091 is about 4735.1970391949. The cubic root of 22422091 is about 281.9845866196.

The spelling of 22422091 in words is "twenty-two million, four hundred twenty-two thousand, ninety-one".