12021002200121 has 4 divisors (see below), whose sum is σ = 12048137645712. Its totient is φ = 11993866754532.

The previous prime is 12021002200117. The next prime is 12021002200127. The reversal of 12021002200121 is 12100220012021.

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 12021002200121 - 2² = 12021002200117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12021002200096 and 12021002200105.

It is not an unprimeable number, because it can be changed into a prime (12021002200127) 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, 13567722131 + ... + 13567723016.

It is an arithmetic number, because the mean of its divisors is an integer number (3012034411428).

Almost surely, 2^{12021002200121} is an apocalyptic number.

It is an amenable number.

12021002200121 is a deficient number, since it is larger than the sum of its proper divisors (27135445591).

12021002200121 is an equidigital number, since it uses as much as digits as its factorization.

12021002200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27135445590.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12021002200121 its reverse (12100220012021), we get a palindrome (24121222212142).

The spelling of 12021002200121 in words is "twelve trillion, twenty-one billion, two million, two hundred thousand, one hundred twenty-one".