22097911 has 4 divisors (see below), whose sum is σ = 24106824. Its totient is φ = 20089000.

The previous prime is 22097879. The next prime is 22097927. The reversal of 22097911 is 11979022.

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 22097911 - 2⁵ = 22097879 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 (22097711) 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, 1004440 + ... + 1004461.

It is an arithmetic number, because the mean of its divisors is an integer number (6026706).

Almost surely, 2^22097911 is an apocalyptic number.

22097911 is a deficient number, since it is larger than the sum of its proper divisors (2008913).

22097911 is a wasteful number, since it uses less digits than its factorization.

22097911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008912.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 22097911 is about 4700.8415204089. The cubic root of 22097911 is about 280.6190004554.

The spelling of 22097911 in words is "twenty-two million, ninety-seven thousand, nine hundred eleven".