12197223 has 10 divisors (see below), whose sum is σ = 18220664. Its totient is φ = 8131428.

The previous prime is 12197219. The next prime is 12197231. The reversal of 12197223 is 32279121.

It is not a de Polignac number, because 12197223 - 2² = 12197219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12197233) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 75211 + ... + 75372.

Almost surely, 2^12197223 is an apocalyptic number.

12197223 is a deficient number, since it is larger than the sum of its proper divisors (6023441).

12197223 is an equidigital number, since it uses as much as digits as its factorization.

12197223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150595 (or 150586 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 12197223 is about 3492.4522902969. The cubic root of 12197223 is about 230.1902836149.

It can be divided in two parts, 121 and 97223, that added together give a square (97344 = 312²).

The spelling of 12197223 in words is "twelve million, one hundred ninety-seven thousand, two hundred twenty-three".