22233421 has 4 divisors (see below), whose sum is σ = 25409632. Its totient is φ = 19057212.

The previous prime is 22233389. The next prime is 22233427. The reversal of 22233421 is 12433222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22233421 - 2⁵ = 22233389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22233427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1588095 + ... + 1588108.

It is an arithmetic number, because the mean of its divisors is an integer number (6352408).

Almost surely, 2^22233421 is an apocalyptic number.

It is an amenable number.

22233421 is a deficient number, since it is larger than the sum of its proper divisors (3176211).

22233421 is an equidigital number, since it uses as much as digits as its factorization.

22233421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3176210.

The product of its digits is 576, while the sum is 19.

The square root of 22233421 is about 4715.2328680565. The cubic root of 22233421 is about 281.1914409111.

Adding to 22233421 its reverse (12433222), we get a palindrome (34666643).

The spelling of 22233421 in words is "twenty-two million, two hundred thirty-three thousand, four hundred twenty-one".