12001122012 has 24 divisors (see below), whose sum is σ = 30548310912. Its totient is φ = 3636703600.

The previous prime is 12001121929. The next prime is 12001122017. The reversal of 12001122012 is 21022110021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001122017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45458664 + ... + 45458927.

It is an arithmetic number, because the mean of its divisors is an integer number (1272846288).

Almost surely, 2^12001122012 is an apocalyptic number.

12001122012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12001122012 is an abundant number, since it is smaller than the sum of its proper divisors (18547188900).

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

12001122012 is a wasteful number, since it uses less digits than its factorization.

12001122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90917609 (or 90917607 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12001122012 its reverse (21022110021), we get a palindrome (33023232033).

The spelling of 12001122012 in words is "twelve billion, one million, one hundred twenty-two thousand, twelve".