22233021 has 32 divisors (see below), whose sum is σ = 32778240. Its totient is φ = 13353984.

The previous prime is 22233017. The next prime is 22233047. The reversal of 22233021 is 12033222.

It is not a de Polignac number, because 22233021 - 2² = 22233017 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22233121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115101 + ... + 115293.

It is an arithmetic number, because the mean of its divisors is an integer number (1024320).

Almost surely, 2^22233021 is an apocalyptic number.

It is an amenable number.

22233021 is a deficient number, since it is larger than the sum of its proper divisors (10545219).

22233021 is a wasteful number, since it uses less digits than its factorization.

22233021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 22233021 is about 4715.1904521451. The cubic root of 22233021 is about 281.1897546022.

Adding to 22233021 its reverse (12033222), we get a palindrome (34266243).

The spelling of 22233021 in words is "twenty-two million, two hundred thirty-three thousand, twenty-one".