12222390 has 32 divisors (see below), whose sum is σ = 29740896. Its totient is φ = 3214080.

The previous prime is 12222389. The next prime is 12222403. The reversal of 12222390 is 9322221.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 601 + ... + 4980.

It is an arithmetic number, because the mean of its divisors is an integer number (929403).

Almost surely, 2^12222390 is an apocalyptic number.

12222390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12222390 is an abundant number, since it is smaller than the sum of its proper divisors (17518506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12222390 is a wasteful number, since it uses less digits than its factorization.

12222390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5664.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 12222390 is about 3496.0534892933. The cubic root of 12222390 is about 230.3484950096.

The spelling of 12222390 in words is "twelve million, two hundred twenty-two thousand, three hundred ninety".