12001221100012 has 12 divisors (see below), whose sum is σ = 21002782756536. Its totient is φ = 6000426026720.

The previous prime is 12001221100003. The next prime is 12001221100079. The reversal of 12001221100012 is 21000112210021.

It is a junction number, because it is equal to n+sod(n) for n = 12001221099965 and 12001221100001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45984433 + ... + 46244680.

It is an arithmetic number, because the mean of its divisors is an integer number (1750231896378).

Almost surely, 2^{12001221100012} is an apocalyptic number.

It is an amenable number.

12001221100012 is a deficient number, since it is larger than the sum of its proper divisors (9001561656524).

12001221100012 is a wasteful number, since it uses less digits than its factorization.

12001221100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92261648 (or 92261646 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12001221100012 its reverse (21000112210021), we get a palindrome (33001333310033).

The spelling of 12001221100012 in words is "twelve trillion, one billion, two hundred twenty-one million, one hundred thousand, twelve".