12102213221 has 8 divisors (see below), whose sum is σ = 13855076160. Its totient is φ = 10355344128.

The previous prime is 12102213203. The next prime is 12102213223. The reversal of 12102213221 is 12231220121.

12102213221 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 not a de Polignac number, because 12102213221 - 2¹⁸ = 12101951077 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 12102213221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102213223) 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, 1494131 + ... + 1502208.

It is an arithmetic number, because the mean of its divisors is an integer number (1731884520).

Almost surely, 2^12102213221 is an apocalyptic number.

It is an amenable number.

12102213221 is a deficient number, since it is larger than the sum of its proper divisors (1752862939).

12102213221 is an equidigital number, since it uses as much as digits as its factorization.

12102213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996923.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12102213221 its reverse (12231220121), we get a palindrome (24333433342).

The spelling of 12102213221 in words is "twelve billion, one hundred two million, two hundred thirteen thousand, two hundred twenty-one".