12021213311 has 8 divisors (see below), whose sum is σ = 12119721600. Its totient is φ = 11922877080.

The previous prime is 12021213301. The next prime is 12021213319. The reversal of 12021213311 is 11331212021.

12021213311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021213311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12021213311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021213319) 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 7 ways as a sum of consecutive naturals, for example, 99206 + ... + 184076.

It is an arithmetic number, because the mean of its divisors is an integer number (1514965200).

Almost surely, 2^12021213311 is an apocalyptic number.

12021213311 is a deficient number, since it is larger than the sum of its proper divisors (98508289).

12021213311 is a wasteful number, since it uses less digits than its factorization.

12021213311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86029.

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

Adding to 12021213311 its reverse (11331212021), we get a palindrome (23352425332).

The spelling of 12021213311 in words is "twelve billion, twenty-one million, two hundred thirteen thousand, three hundred eleven".