12133213121 has 8 divisors (see below), whose sum is σ = 12438353664. Its totient is φ = 11829116880.

The previous prime is 12133213091. The next prime is 12133213139. The reversal of 12133213121 is 12131233121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12133213121 - 2¹⁰ = 12133212097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12133213093 and 12133213102.

It is not an unprimeable number, because it can be changed into a prime (12133213151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237521 + ... + 284046.

It is an arithmetic number, because the mean of its divisors is an integer number (1554794208).

Almost surely, 2^12133213121 is an apocalyptic number.

It is an amenable number.

12133213121 is a deficient number, since it is larger than the sum of its proper divisors (305140543).

12133213121 is an equidigital number, since it uses as much as digits as its factorization.

12133213121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522151.

The product of its digits is 216, while the sum is 20.

Adding to 12133213121 its reverse (12131233121), we get a palindrome (24264446242).

The spelling of 12133213121 in words is "twelve billion, one hundred thirty-three million, two hundred thirteen thousand, one hundred twenty-one".