12217472323 has 4 divisors (see below), whose sum is σ = 13962825520. Its totient is φ = 10472119128.

The previous prime is 12217472303. The next prime is 12217472369. The reversal of 12217472323 is 32327471221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32327471221 = 23 ⋅1405542227.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12217472323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12217472303) 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, 872676588 + ... + 872676601.

It is an arithmetic number, because the mean of its divisors is an integer number (3490706380).

Almost surely, 2^12217472323 is an apocalyptic number.

12217472323 is a deficient number, since it is larger than the sum of its proper divisors (1745353197).

12217472323 is an equidigital number, since it uses as much as digits as its factorization.

12217472323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745353196.

The product of its digits is 28224, while the sum is 34.

The spelling of 12217472323 in words is "twelve billion, two hundred seventeen million, four hundred seventy-two thousand, three hundred twenty-three".