12152231 has 8 divisors (see below), whose sum is σ = 14956704. Its totient is φ = 9614880.

The previous prime is 12152227. The next prime is 12152233. The reversal of 12152231 is 13225121.

It is a happy number.

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 12152231 - 2² = 12152227 is a prime.

It is a super-2 number, since 2×12152231² = 295353436554722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12152233) 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, 66680 + ... + 66861.

It is an arithmetic number, because the mean of its divisors is an integer number (1869588).

Almost surely, 2^12152231 is an apocalyptic number.

12152231 is a deficient number, since it is larger than the sum of its proper divisors (2804473).

12152231 is a wasteful number, since it uses less digits than its factorization.

12152231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133561.

The product of its digits is 120, while the sum is 17.

The square root of 12152231 is about 3486.0050200767. The cubic root of 12152231 is about 229.9068999379.

Adding to 12152231 its reverse (13225121), we get a palindrome (25377352).

The spelling of 12152231 in words is "twelve million, one hundred fifty-two thousand, two hundred thirty-one".