22333222 has 4 divisors (see below), whose sum is σ = 33499836. Its totient is φ = 11166610.

The previous prime is 22333217. The next prime is 22333231. The reversal of 22333222 is 22233322.

It is a semiprime because it is the product of two primes.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 22333222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5583304 + ... + 5583307.

It is an arithmetic number, because the mean of its divisors is an integer number (8374959).

Almost surely, 2^22333222 is an apocalyptic number.

22333222 is a deficient number, since it is larger than the sum of its proper divisors (11166614).

22333222 is a wasteful number, since it uses less digits than its factorization.

22333222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11166613.

The product of its digits is 864, while the sum is 19.

The square root of 22333222 is about 4725.8038469661. The cubic root of 22333222 is about 281.6115487231.

Adding to 22333222 its reverse (22233322), we get a palindrome (44566544).

It can be divided in two parts, 2233322 and 2, that multiplied together give a palindrome (4466644).

The spelling of 22333222 in words is "twenty-two million, three hundred thirty-three thousand, two hundred twenty-two".