12102010221 has 32 divisors (see below), whose sum is σ = 18958076928. Its totient is φ = 6722789760.

The previous prime is 12102010163. The next prime is 12102010223. The reversal of 12102010221 is 12201020121.

It is not a de Polignac number, because 12102010221 - 2¹⁹ = 12101485933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12102010197 and 12102010206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102010223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218830 + ... + 268496.

It is an arithmetic number, because the mean of its divisors is an integer number (592439904).

Almost surely, 2^12102010221 is an apocalyptic number.

It is an amenable number.

12102010221 is a deficient number, since it is larger than the sum of its proper divisors (6856066707).

12102010221 is a wasteful number, since it uses less digits than its factorization.

12102010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50001.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12102010221 its reverse (12201020121), we get a palindrome (24303030342).

The spelling of 12102010221 in words is "twelve billion, one hundred two million, ten thousand, two hundred twenty-one".