12232155 has 32 divisors (see below), whose sum is σ = 21268800. Its totient is φ = 5967360.

The previous prime is 12232151. The next prime is 12232169. The reversal of 12232155 is 55123221.

It is not a de Polignac number, because 12232155 - 2² = 12232151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12232151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28845 + ... + 29265.

It is an arithmetic number, because the mean of its divisors is an integer number (664650).

Almost surely, 2^12232155 is an apocalyptic number.

12232155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12232155 is a deficient number, since it is larger than the sum of its proper divisors (9036645).

12232155 is a wasteful number, since it uses less digits than its factorization.

12232155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591.

The product of its digits is 600, while the sum is 21.

The square root of 12232155 is about 3497.4497852006. The cubic root of 12232155 is about 230.4098238300.

Adding to 12232155 its reverse (55123221), we get a palindrome (67355376).

The spelling of 12232155 in words is "twelve million, two hundred thirty-two thousand, one hundred fifty-five".