12102130020221 has 8 divisors (see below), whose sum is σ = 12227335632600. Its totient is φ = 11977510851648.

The previous prime is 12102130020181. The next prime is 12102130020251. The reversal of 12102130020221 is 12202003120121.

It can be written as a sum of positive squares in 4 ways, for example, as 1708850272900 + 10393279747321 = 1307230^2 + 3223861^2 .

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 12102130020221 - 2²⁶ = 12102062911357 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 12102130020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102130020251) 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, 146569466 + ... + 146652011.

It is an arithmetic number, because the mean of its divisors is an integer number (1528416954075).

Almost surely, 2^{12102130020221} is an apocalyptic number.

It is an amenable number.

12102130020221 is a deficient number, since it is larger than the sum of its proper divisors (125205612379).

12102130020221 is a wasteful number, since it uses less digits than its factorization.

12102130020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293221903.

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

Adding to 12102130020221 its reverse (12202003120121), we get a palindrome (24304133140342).

The spelling of 12102130020221 in words is "twelve trillion, one hundred two billion, one hundred thirty million, twenty thousand, two hundred twenty-one".