12102002100021 has 8 divisors (see below), whose sum is σ = 16278799285440. Its totient is φ = 7996603157312.

The previous prime is 12102002100017. The next prime is 12102002100053. The reversal of 12102002100021 is 12000120020121.

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 12102002100021 - 2² = 12102002100017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102002100061) 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, 17849560281 + ... + 17849560958.

It is an arithmetic number, because the mean of its divisors is an integer number (2034849910680).

Almost surely, 2^{12102002100021} is an apocalyptic number.

It is an amenable number.

12102002100021 is a deficient number, since it is larger than the sum of its proper divisors (4176797185419).

12102002100021 is a wasteful number, since it uses less digits than its factorization.

12102002100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35699121355.

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

Adding to 12102002100021 its reverse (12000120020121), we get a palindrome (24102122120142).

The spelling of 12102002100021 in words is "twelve trillion, one hundred two billion, two million, one hundred thousand, twenty-one".