12132223121 has 32 divisors (see below), whose sum is σ = 13283827200. Its totient is φ = 11041920000.

The previous prime is 12132223079. The next prime is 12132223183.

12132223121 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 12132223121 - 2²² = 12128028817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12132223093 and 12132223102.

It is not an unprimeable number, because it can be changed into a prime (12132223721) 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 31 ways as a sum of consecutive naturals, for example, 21321725 + ... + 21322293.

It is an arithmetic number, because the mean of its divisors is an integer number (415119600).

Almost surely, 2^12132223121 is an apocalyptic number.

It is an amenable number.

12132223121 is a deficient number, since it is larger than the sum of its proper divisors (1151604079).

12132223121 is a wasteful number, since it uses less digits than its factorization.

12132223121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001.

The product of its digits is 288, while the sum is 20.

The spelling of 12132223121 in words is "twelve billion, one hundred thirty-two million, two hundred twenty-three thousand, one hundred twenty-one".