22004197 has 4 divisors (see below), whose sum is σ = 22014720. Its totient is φ = 21993676.

The previous prime is 22004189. The next prime is 22004221. The reversal of 22004197 is 79140022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22004197 - 2³ = 22004189 is a prime.

It is a super-2 number, since 2×22004197² = 968369371229618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22004497) 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, 943 + ... + 6700.

It is an arithmetic number, because the mean of its divisors is an integer number (5503680).

Almost surely, 2^22004197 is an apocalyptic number.

It is an amenable number.

22004197 is a deficient number, since it is larger than the sum of its proper divisors (10523).

22004197 is an equidigital number, since it uses as much as digits as its factorization.

22004197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10522.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 22004197 is about 4690.8631401907. The cubic root of 22004197 is about 280.2217503554.

It can be divided in two parts, 22004 and 197, that added together give a square (22201 = 149²).

The spelling of 22004197 in words is "twenty-two million, four thousand, one hundred ninety-seven".