12132133021 has 4 divisors (see below), whose sum is σ = 12170405052. Its totient is φ = 12093860992.

The previous prime is 12132132967. The next prime is 12132133031. The reversal of 12132133021 is 12033123121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5450868900 + 6681264121 = 73830^2 + 81739^2 .

It is a cyclic number.

It is not a de Polignac number, because 12132133021 - 2¹⁷ = 12132001949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12132133021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12132133031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19135540 + ... + 19136173.

It is an arithmetic number, because the mean of its divisors is an integer number (3042601263).

Almost surely, 2^12132133021 is an apocalyptic number.

It is an amenable number.

12132133021 is a deficient number, since it is larger than the sum of its proper divisors (38272031).

12132133021 is an equidigital number, since it uses as much as digits as its factorization.

12132133021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38272030.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12132133021 its reverse (12033123121), we get a palindrome (24165256142).

The spelling of 12132133021 in words is "twelve billion, one hundred thirty-two million, one hundred thirty-three thousand, twenty-one".