12011013321 has 4 divisors (see below), whose sum is σ = 16014684432. Its totient is φ = 8007342212.

The previous prime is 12011013319. The next prime is 12011013353. The reversal of 12011013321 is 12331011021.

It is a happy number.

12011013321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12011013321 - 2¹ = 12011013319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12011013321.

It is not an unprimeable number, because it can be changed into a prime (12011013361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2001835551 + ... + 2001835556.

It is an arithmetic number, because the mean of its divisors is an integer number (4003671108).

Almost surely, 2^12011013321 is an apocalyptic number.

It is an amenable number.

12011013321 is a deficient number, since it is larger than the sum of its proper divisors (4003671111).

12011013321 is an equidigital number, since it uses as much as digits as its factorization.

12011013321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4003671110.

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

Adding to 12011013321 its reverse (12331011021), we get a palindrome (24342024342).

The spelling of 12011013321 in words is "twelve billion, eleven million, thirteen thousand, three hundred twenty-one".