12120102002121 has 4 divisors (see below), whose sum is σ = 16160136002832. Its totient is φ = 8080068001412.

The previous prime is 12120102002111. The next prime is 12120102002147. The reversal of 12120102002121 is 12120020102121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12120102002121 - 2¹³ = 12120101993929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12120102002121.

It is not an unprimeable number, because it can be changed into a prime (12120102002111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2020017000351 + ... + 2020017000356.

It is an arithmetic number, because the mean of its divisors is an integer number (4040034000708).

Almost surely, 2^{12120102002121} is an apocalyptic number.

It is an amenable number.

12120102002121 is a deficient number, since it is larger than the sum of its proper divisors (4040034000711).

12120102002121 is an equidigital number, since it uses as much as digits as its factorization.

12120102002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040034000710.

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

Adding to 12120102002121 its reverse (12120020102121), we get a palindrome (24240122104242).

The spelling of 12120102002121 in words is "twelve trillion, one hundred twenty billion, one hundred two million, two thousand, one hundred twenty-one".