22204001 has 16 divisors (see below), whose sum is σ = 23647680. Its totient is φ = 20824320.

The previous prime is 22203997. The next prime is 22204009. The reversal of 22204001 is 10040222.

It is a cyclic number.

It is not a de Polignac number, because 22204001 - 2² = 22203997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22204009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162005 + ... + 162141.

It is an arithmetic number, because the mean of its divisors is an integer number (1477980).

Almost surely, 2^22204001 is an apocalyptic number.

It is an amenable number.

22204001 is a deficient number, since it is larger than the sum of its proper divisors (1443679).

22204001 is a wasteful number, since it uses less digits than its factorization.

22204001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 22204001 is about 4712.1121591066. The cubic root of 22204001 is about 281.0673588853.

Adding to 22204001 its reverse (10040222), we get a palindrome (32244223).

The spelling of 22204001 in words is "twenty-two million, two hundred four thousand, one".