12001211122 has 16 divisors (see below), whose sum is σ = 18495681120. Its totient is φ = 5838081408.

The previous prime is 12001211111. The next prime is 12001211161. The reversal of 12001211122 is 22111210021.

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, 512808 + ... + 535699.

It is an arithmetic number, because the mean of its divisors is an integer number (1155980070).

Almost surely, 2^12001211122 is an apocalyptic number.

12001211122 is a deficient number, since it is larger than the sum of its proper divisors (6494469998).

12001211122 is a wasteful number, since it uses less digits than its factorization.

12001211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048665.

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

Adding to 12001211122 its reverse (22111210021), we get a palindrome (34112421143).

The spelling of 12001211122 in words is "twelve billion, one million, two hundred eleven thousand, one hundred twenty-two".