12102102102221 has 8 divisors (see below), whose sum is σ = 12176887761024. Its totient is φ = 12027323024640.

The previous prime is 12102102102193. The next prime is 12102102102227. The reversal of 12102102102221 is 12220120120121.

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 12102102102221 - 2³⁰ = 12101028360397 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 12102102102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102102102227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2069660 + ... + 5337386.

It is an arithmetic number, because the mean of its divisors is an integer number (1522110970128).

Almost surely, 2^{12102102102221} is an apocalyptic number.

It is an amenable number.

12102102102221 is a deficient number, since it is larger than the sum of its proper divisors (74785658803).

12102102102221 is a wasteful number, since it uses less digits than its factorization.

12102102102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3290611.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12102102102221 its reverse (12220120120121), we get a palindrome (24322222222342).

The spelling of 12102102102221 in words is "twelve trillion, one hundred two billion, one hundred two million, one hundred two thousand, two hundred twenty-one".