12001221012002 has 16 divisors (see below), whose sum is σ = 18949369596000. Its totient is φ = 5684766922080.

The previous prime is 12001221011981. The next prime is 12001221012007. The reversal of 12001221012002 is 20021012210021.

It is not an unprimeable number, because it can be changed into a prime (12001221012007) 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, 13710374 + ... + 14559422.

It is an arithmetic number, because the mean of its divisors is an integer number (1184335599750).

Almost surely, 2^{12001221012002} is an apocalyptic number.

12001221012002 is a deficient number, since it is larger than the sum of its proper divisors (6948148583998).

12001221012002 is a wasteful number, since it uses less digits than its factorization.

12001221012002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221041.

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

Adding to 12001221012002 its reverse (20021012210021), we get a palindrome (32022233222023).

The spelling of 12001221012002 in words is "twelve trillion, one billion, two hundred twenty-one million, twelve thousand, two".