12001222222112 has 48 divisors (see below), whose sum is σ = 24934890052800. Its totient is φ = 5670175507200.

The previous prime is 12001222222057. The next prime is 12001222222139. The reversal of 12001222222112 is 21122222210021.

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, 25134764 + ... + 25607787.

It is an arithmetic number, because the mean of its divisors is an integer number (519476876100).

Almost surely, 2^{12001222222112} is an apocalyptic number.

It is an amenable number.

12001222222112 is an abundant number, since it is smaller than the sum of its proper divisors (12933667830688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12001222222112 is a wasteful number, since it uses less digits than its factorization.

12001222222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50742969 (or 50742961 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12001222222112 its reverse (21122222210021), we get a palindrome (33123444432133).

The spelling of 12001222222112 in words is "twelve trillion, one billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred twelve".