12001111012122 has 16 divisors (see below), whose sum is σ = 24002334168960. Its totient is φ = 4000351646592.

The previous prime is 12001111012057. The next prime is 12001111012139. The reversal of 12001111012122 is 22121011110021.

It is a happy number.

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, 3248098 + ... + 5878125.

It is an arithmetic number, because the mean of its divisors is an integer number (1500145885560).

Almost surely, 2^{12001111012122} is an apocalyptic number.

12001111012122 is an abundant number, since it is smaller than the sum of its proper divisors (12001223156838).

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

12001111012122 is a wasteful number, since it uses less digits than its factorization.

12001111012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9345397.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12001111012122 its reverse (22121011110021), we get a palindrome (34122122122143).

The spelling of 12001111012122 in words is "twelve trillion, one billion, one hundred eleven million, twelve thousand, one hundred twenty-two".