12213192 has 32 divisors (see below), whose sum is σ = 30955680. Its totient is φ = 4014720.

The previous prime is 12213169. The next prime is 12213193. The reversal of 12213192 is 29131221.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12213193) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1734 + ... + 5237.

It is an arithmetic number, because the mean of its divisors is an integer number (967365).

Almost surely, 2^12213192 is an apocalyptic number.

12213192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12213192 is an abundant number, since it is smaller than the sum of its proper divisors (18742488).

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

12213192 is a wasteful number, since it uses less digits than its factorization.

12213192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7053 (or 7049 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

The square root of 12213192 is about 3494.7377584019. The cubic root of 12213192 is about 230.2906973348.

The spelling of 12213192 in words is "twelve million, two hundred thirteen thousand, one hundred ninety-two".