12226157 has 8 divisors (see below), whose sum is σ = 12700800. Its totient is φ = 11760544.

The previous prime is 12226127. The next prime is 12226187. The reversal of 12226157 is 75162221.

It is an interprime number because it is at equal distance from previous prime (12226127) and next prime (12226187).

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

It is a cyclic number.

It is not a de Polignac number, because 12226157 - 2⁸ = 12225901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12226117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569 + ... + 4977.

It is an arithmetic number, because the mean of its divisors is an integer number (1587600).

Almost surely, 2^12226157 is an apocalyptic number.

It is an amenable number.

12226157 is a deficient number, since it is larger than the sum of its proper divisors (474643).

12226157 is an equidigital number, since it uses as much as digits as its factorization.

12226157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4515.

The product of its digits is 1680, while the sum is 26.

The square root of 12226157 is about 3496.5921981266. The cubic root of 12226157 is about 230.3721574207.

Adding to 12226157 its reverse (75162221), we get a palindrome (87388378).

The spelling of 12226157 in words is "twelve million, two hundred twenty-six thousand, one hundred fifty-seven".