12132023121 has 6 divisors (see below), whose sum is σ = 17524033410. Its totient is φ = 8088015408.

The previous prime is 12132023087. The next prime is 12132023131.

12132023121 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 6779052225 + 5352970896 = 82335^2 + 73164^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12132023121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12132023094 and 12132023103.

It is not an unprimeable number, because it can be changed into a prime (12132023131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 674001276 + ... + 674001293.

It is an arithmetic number, because the mean of its divisors is an integer number (2920672235).

Almost surely, 2^12132023121 is an apocalyptic number.

It is an amenable number.

12132023121 is a deficient number, since it is larger than the sum of its proper divisors (5392010289).

12132023121 is a wasteful number, since it uses less digits than its factorization.

12132023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348002575 (or 1348002572 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

It can be divided in two parts, 121320 and 23121, that added together give a palindrome (144441).

The spelling of 12132023121 in words is "twelve billion, one hundred thirty-two million, twenty-three thousand, one hundred twenty-one".