12011103321 has 16 divisors (see below), whose sum is σ = 18361494528. Its totient is φ = 6841414800.

The previous prime is 12011103317. The next prime is 12011103331. The reversal of 12011103321 is 12330111021.

It is a happy number.

It is not a de Polignac number, because 12011103321 - 2² = 12011103317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12011103321.

It is not an unprimeable number, because it can be changed into a prime (12011103301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 913015 + ... + 926076.

It is an arithmetic number, because the mean of its divisors is an integer number (1147593408).

Almost surely, 2^12011103321 is an apocalyptic number.

It is an amenable number.

12011103321 is a deficient number, since it is larger than the sum of its proper divisors (6350391207).

12011103321 is a wasteful number, since it uses less digits than its factorization.

12011103321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839412.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12011103321 its reverse (12330111021), we get a palindrome (24341214342).

The spelling of 12011103321 in words is "twelve billion, eleven million, one hundred three thousand, three hundred twenty-one".