12001221021122 has 64 divisors (see below), whose sum is σ = 19372108677120. Its totient is φ = 5558693609664.

The previous prime is 12001221021091. The next prime is 12001221021191. The reversal of 12001221021122 is 22112012210021.

It is a self number, because there is not a number n which added to its sum of digits gives 12001221021122.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1147010063 + ... + 1147020525.

It is an arithmetic number, because the mean of its divisors is an integer number (302689198080).

Almost surely, 2^{12001221021122} is an apocalyptic number.

12001221021122 is a deficient number, since it is larger than the sum of its proper divisors (7370887655998).

12001221021122 is a wasteful number, since it uses less digits than its factorization.

12001221021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12407.

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

Adding to 12001221021122 its reverse (22112012210021), we get a palindrome (34113233231143).

The spelling of 12001221021122 in words is "twelve trillion, one billion, two hundred twenty-one million, twenty-one thousand, one hundred twenty-two".