22360221 has 36 divisors (see below), whose sum is σ = 35694516. Its totient is φ = 13478400.

The previous prime is 22360201. The next prime is 22360241. The reversal of 22360221 is 12206322.

It is an interprime number because it is at equal distance from previous prime (22360201) and next prime (22360241).

It can be written as a sum of positive squares in 6 ways, for example, as 6320196 + 16040025 = 2514^2 + 4005^2 .

It is not a de Polignac number, because 22360221 - 2⁶ = 22360157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22360194 and 22360203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22360201) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 92661 + ... + 92901.

Almost surely, 2^22360221 is an apocalyptic number.

It is an amenable number.

22360221 is a deficient number, since it is larger than the sum of its proper divisors (13334295).

22360221 is a wasteful number, since it uses less digits than its factorization.

22360221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 22360221 is about 4728.6595352171. The cubic root of 22360221 is about 281.7249846374.

Adding to 22360221 its reverse (12206322), we get a palindrome (34566543).

The spelling of 22360221 in words is "twenty-two million, three hundred sixty thousand, two hundred twenty-one".