22261233 has 4 divisors (see below), whose sum is σ = 29681648. Its totient is φ = 14840820.

The previous prime is 22261207. The next prime is 22261247. The reversal of 22261233 is 33216222.

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 not a de Polignac number, because 22261233 - 2⁵ = 22261201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22261273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3710203 + ... + 3710208.

It is an arithmetic number, because the mean of its divisors is an integer number (7420412).

Almost surely, 2^22261233 is an apocalyptic number.

It is an amenable number.

22261233 is a deficient number, since it is larger than the sum of its proper divisors (7420415).

22261233 is an equidigital number, since it uses as much as digits as its factorization.

22261233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7420414.

The product of its digits is 864, while the sum is 21.

The square root of 22261233 is about 4718.1811114030. The cubic root of 22261233 is about 281.3086404146.

Adding to 22261233 its reverse (33216222), we get a palindrome (55477455).

The spelling of 22261233 in words is "twenty-two million, two hundred sixty-one thousand, two hundred thirty-three".