12102202110021 has 32 divisors (see below), whose sum is σ = 16464170782080. Its totient is φ = 7905831757824.

The previous prime is 12102202110017. The next prime is 12102202110071. The reversal of 12102202110021 is 12001120220121.

It is not a de Polignac number, because 12102202110021 - 2² = 12102202110017 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102202110071) 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, 272814175 + ... + 272858531.

It is an arithmetic number, because the mean of its divisors is an integer number (514505336940).

Almost surely, 2^{12102202110021} is an apocalyptic number.

It is an amenable number.

12102202110021 is a deficient number, since it is larger than the sum of its proper divisors (4361968672059).

12102202110021 is a wasteful number, since it uses less digits than its factorization.

12102202110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53605.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12102202110021 its reverse (12001120220121), we get a palindrome (24103322330142).

The spelling of 12102202110021 in words is "twelve trillion, one hundred two billion, two hundred two million, one hundred ten thousand, twenty-one".