22200321 has 16 divisors (see below), whose sum is σ = 34776000. Its totient is φ = 12419520.

The previous prime is 22200307. The next prime is 22200323. The reversal of 22200321 is 12300222.

It is not a de Polignac number, because 22200321 - 2⁵ = 22200289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22200297 and 22200306.

It is not an unprimeable number, because it can be changed into a prime (22200323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25446 + ... + 26303.

It is an arithmetic number, because the mean of its divisors is an integer number (2173500).

It is a Proth number, since it is equal to 1355 ⋅ 2¹⁴ + 1 and 1355 < 2¹⁴.

Almost surely, 2^22200321 is an apocalyptic number.

It is an amenable number.

22200321 is a deficient number, since it is larger than the sum of its proper divisors (12575679).

22200321 is a wasteful number, since it uses less digits than its factorization.

22200321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51776.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 22200321 is about 4711.7216598607. The cubic root of 22200321 is about 281.0518303772.

Adding to 22200321 its reverse (12300222), we get a palindrome (34500543).

Subtracting from 22200321 its reverse (12300222), we obtain a palindrome (9900099).

The spelling of 22200321 in words is "twenty-two million, two hundred thousand, three hundred twenty-one".