12001122013212 has 36 divisors (see below), whose sum is σ = 30351345388000. Its totient is φ = 3998372792832.

The previous prime is 12001122013207. The next prime is 12001122013213. The reversal of 12001122013212 is 21231022110021.

12001122013212 is a `hidden beast` number, since 120 + 0 + 1 + 1 + 220 + 1 + 321 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001122013213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83310853 + ... + 83454780.

Almost surely, 2^{12001122013212} is an apocalyptic number.

12001122013212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12001122013212 is an abundant number, since it is smaller than the sum of its proper divisors (18350223374788).

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

12001122013212 is a wasteful number, since it uses less digits than its factorization.

12001122013212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166767642 (or 166767637 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12001122013212 its reverse (21231022110021), we get a palindrome (33232144123233).

The spelling of 12001122013212 in words is "twelve trillion, one billion, one hundred twenty-two million, thirteen thousand, two hundred twelve".