12223138 has 8 divisors (see below), whose sum is σ = 18367020. Its totient is φ = 6100800.

The previous prime is 12223109. The next prime is 12223139. The reversal of 12223138 is 83132221.

It can be written as a sum of positive squares in 2 ways, for example, as 9903609 + 2319529 = 3147^2 + 1523^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12223139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3883 + ... + 6286.

Almost surely, 2^12223138 is an apocalyptic number.

12223138 is a deficient number, since it is larger than the sum of its proper divisors (6143882).

12223138 is a wasteful number, since it uses less digits than its factorization.

12223138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10772.

The product of its digits is 576, while the sum is 22.

The square root of 12223138 is about 3496.1604654249. The cubic root of 12223138 is about 230.3531939585.

Adding to 12223138 its reverse (83132221), we get a palindrome (95355359).

The spelling of 12223138 in words is "twelve million, two hundred twenty-three thousand, one hundred thirty-eight".