12231043121 has 24 divisors (see below), whose sum is σ = 13870440192. Its totient is φ = 10769220000.

The previous prime is 12231043079. The next prime is 12231043127. The reversal of 12231043121 is 12134013221.

It is not a de Polignac number, because 12231043121 - 2²⁶ = 12163934257 is a prime.

It is a super-2 number, since 2×12231043121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12231043093 and 12231043102.

It is not an unprimeable number, because it can be changed into a prime (12231043127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 992246 + ... + 1004496.

It is an arithmetic number, because the mean of its divisors is an integer number (577935008).

Almost surely, 2^12231043121 is an apocalyptic number.

12231043121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12231043121 is a deficient number, since it is larger than the sum of its proper divisors (1639397071).

12231043121 is a wasteful number, since it uses less digits than its factorization.

12231043121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12533 (or 12522 counting only the distinct ones).

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

Adding to 12231043121 its reverse (12134013221), we get a palindrome (24365056342).

The spelling of 12231043121 in words is "twelve billion, two hundred thirty-one million, forty-three thousand, one hundred twenty-one".