12172322 has 8 divisors (see below), whose sum is σ = 18274476. Its totient is φ = 6080832.

The previous prime is 12172309. The next prime is 12172327. The reversal of 12172322 is 22327121.

12172322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10686361 + 1485961 = 3269^2 + 1219^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12172294 and 12172303.

It is not an unprimeable number, because it can be changed into a prime (12172327) 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, 1478 + ... + 5150.

Almost surely, 2^12172322 is an apocalyptic number.

12172322 is a deficient number, since it is larger than the sum of its proper divisors (6102154).

12172322 is a wasteful number, since it uses less digits than its factorization.

12172322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5332.

The product of its digits is 336, while the sum is 20.

The square root of 12172322 is about 3488.8854953982. The cubic root of 12172322 is about 230.0335300833.

Adding to 12172322 its reverse (22327121), we get a palindrome (34499443).

The spelling of 12172322 in words is "twelve million, one hundred seventy-two thousand, three hundred twenty-two".