12002121212001 has 4 divisors (see below), whose sum is σ = 16002828282672. Its totient is φ = 8001414141332.

The previous prime is 12002121211937. The next prime is 12002121212017. The reversal of 12002121212001 is 10021212120021.

12002121212001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12002121212001 - 2⁶ = 12002121211937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12002121212041) 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, 2000353535331 + ... + 2000353535336.

It is an arithmetic number, because the mean of its divisors is an integer number (4000707070668).

Almost surely, 2^{12002121212001} is an apocalyptic number.

It is an amenable number.

12002121212001 is a deficient number, since it is larger than the sum of its proper divisors (4000707070671).

12002121212001 is an equidigital number, since it uses as much as digits as its factorization.

12002121212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000707070670.

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

Adding to 12002121212001 its reverse (10021212120021), we get a palindrome (22023333332022).

It can be divided in two parts, 1 and 2002121212001, that added together give a palindrome (2002121212002).

The spelling of 12002121212001 in words is "twelve trillion, two billion, one hundred twenty-one million, two hundred twelve thousand, one".