12133158 has 16 divisors (see below), whose sum is σ = 24494400. Its totient is φ = 4006376.

The previous prime is 12133139. The next prime is 12133159. The reversal of 12133158 is 85133121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12133159) 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, 8808 + ... + 10091.

It is an arithmetic number, because the mean of its divisors is an integer number (1530900).

Almost surely, 2^12133158 is an apocalyptic number.

12133158 is an abundant number, since it is smaller than the sum of its proper divisors (12361242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12133158 is a wasteful number, since it uses less digits than its factorization.

12133158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19011.

The product of its digits is 720, while the sum is 24.

The square root of 12133158 is about 3483.2682928537. The cubic root of 12133158 is about 229.7865568666.

Adding to 12133158 its reverse (85133121), we get a palindrome (97266279).

It can be divided in two parts, 1213 and 3158, that added together give a triangular number (4371 = T₉₃).

The spelling of 12133158 in words is "twelve million, one hundred thirty-three thousand, one hundred fifty-eight".