12223172 has 24 divisors (see below), whose sum is σ = 23662296.
Its totient is φ = 5488128.
The previous prime is 12223139. The next prime is 12223199. The reversal of 12223172 is 27132221.
It can be written as a sum of positive squares in 4 ways, for example, as 1893376 + 10329796 = 1376^2 + 3214^2
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1253 + ... + 5100.
It is an arithmetic number, because the mean of its divisors is an integer number (985929).
Almost surely, 212223172 is an apocalyptic number.
It is an amenable number.
12223172 is a deficient number, since it is larger than the sum of its proper divisors (11439124).
12223172 is a wasteful number, since it uses less digits than its factorization.
12223172 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6407 (or 6405 counting only the distinct ones).
The product of its digits is 336, while the sum is 20.
The square root of 12223172 is about 3496.1653278986.
The cubic root of 12223172 is about 230.3534075426.
Adding to 12223172 its reverse (27132221), we get a palindrome (39355393).
The spelling of 12223172 in words is "twelve million, two hundred twenty-three thousand, one hundred seventy-two".