22204143 has 24 divisors (see below), whose sum is σ = 34900320. Its totient is φ = 13521600.

The previous prime is 22204139. The next prime is 22204151. The reversal of 22204143 is 34140222.

It is not a de Polignac number, because 22204143 - 2² = 22204139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22204943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10878 + ... + 12756.

It is an arithmetic number, because the mean of its divisors is an integer number (1454180).

Almost surely, 2^22204143 is an apocalyptic number.

22204143 is a deficient number, since it is larger than the sum of its proper divisors (12696177).

22204143 is a wasteful number, since it uses less digits than its factorization.

22204143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999 (or 1996 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 22204143 is about 4712.1272266355. The cubic root of 22204143 is about 281.0679580488.

Adding to 22204143 its reverse (34140222), we get a palindrome (56344365).

The spelling of 22204143 in words is "twenty-two million, two hundred four thousand, one hundred forty-three".