12132131 has 4 divisors (see below), whose sum is σ = 13235064. Its totient is φ = 11029200.

The previous prime is 12132103. The next prime is 12132151. The reversal of 12132131 is 13123121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13123121 = 11 ⋅1193011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12132131 is a prime.

It is a super-2 number, since 2×12132131² = 294377205202322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12132151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551450 + ... + 551471.

It is an arithmetic number, because the mean of its divisors is an integer number (3308766).

Almost surely, 2^12132131 is an apocalyptic number.

12132131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12132131 is a deficient number, since it is larger than the sum of its proper divisors (1102933).

12132131 is a wasteful number, since it uses less digits than its factorization.

12132131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102932.

The product of its digits is 36, while the sum is 14.

The square root of 12132131 is about 3483.1208707135. The cubic root of 12132131 is about 229.7800733264.

Adding to 12132131 its reverse (13123121), we get a palindrome (25255252).

The spelling of 12132131 in words is "twelve million, one hundred thirty-two thousand, one hundred thirty-one".