12213390 has 64 divisors (see below), whose sum is σ = 35274240. Its totient is φ = 2643840.

The previous prime is 12213353. The next prime is 12213401. The reversal of 12213390 is 9331221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2460 + ... + 5520.

It is an arithmetic number, because the mean of its divisors is an integer number (551160).

Almost surely, 2^12213390 is an apocalyptic number.

12213390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12213390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17637120).

12213390 is an abundant number, since it is smaller than the sum of its proper divisors (23060850).

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

12213390 is a wasteful number, since it uses less digits than its factorization.

12213390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3097.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 12213390 is about 3494.7660865929. The cubic root of 12213390 is about 230.2919418173.

The spelling of 12213390 in words is "twelve million, two hundred thirteen thousand, three hundred ninety".