12001221202112 has 56 divisors (see below), whose sum is σ = 23868984530160. Its totient is φ = 5986991528960.

The previous prime is 12001221202099. The next prime is 12001221202129. The reversal of 12001221202112 is 21120212210021.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500936438 + ... + 500960394.

It is an arithmetic number, because the mean of its divisors is an integer number (426231866610).

Almost surely, 2^{12001221202112} is an apocalyptic number.

It is an amenable number.

12001221202112 is a deficient number, since it is larger than the sum of its proper divisors (11867763328048).

12001221202112 is a wasteful number, since it uses less digits than its factorization.

12001221202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41409 (or 41399 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12001221202112 its reverse (21120212210021), we get a palindrome (33121433412133).

The spelling of 12001221202112 in words is "twelve trillion, one billion, two hundred twenty-one million, two hundred two thousand, one hundred twelve".