12321213011 has 4 divisors (see below), whose sum is σ = 12321507792. Its totient is φ = 12320918232.

The previous prime is 12321213007. The next prime is 12321213013. The reversal of 12321213011 is 11031212321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12321213011 - 2² = 12321213007 is a prime.

It is a super-2 number, since 2×12321213011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12321213013) 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 3 ways as a sum of consecutive naturals, for example, 71756 + ... + 172601.

It is an arithmetic number, because the mean of its divisors is an integer number (3080376948).

Almost surely, 2^12321213011 is an apocalyptic number.

12321213011 is a deficient number, since it is larger than the sum of its proper divisors (294781).

12321213011 is an equidigital number, since it uses as much as digits as its factorization.

12321213011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294780.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12321213011 its reverse (11031212321), we get a palindrome (23352425332).

The spelling of 12321213011 in words is "twelve billion, three hundred twenty-one million, two hundred thirteen thousand, eleven".