12151172 has 24 divisors (see below), whose sum is σ = 23358720. Its totient is φ = 5484960.

The previous prime is 12151169. The next prime is 12151177. The reversal of 12151172 is 27115121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12151177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6029 + ... + 7787.

It is an arithmetic number, because the mean of its divisors is an integer number (973280).

Almost surely, 2^12151172 is an apocalyptic number.

It is an amenable number.

12151172 is a deficient number, since it is larger than the sum of its proper divisors (11207548).

12151172 is a wasteful number, since it uses less digits than its factorization.

12151172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931 (or 1929 counting only the distinct ones).

The product of its digits is 140, while the sum is 20.

The square root of 12151172 is about 3485.8531236987. The cubic root of 12151172 is about 229.9002213706.

Adding to 12151172 its reverse (27115121), we get a palindrome (39266293).

The spelling of 12151172 in words is "twelve million, one hundred fifty-one thousand, one hundred seventy-two".