12021212010012 has 144 divisors (see below), whose sum is σ = 31393696414080. Its totient is φ = 3569571763200.

The previous prime is 12021212009987. The next prime is 12021212010019. The reversal of 12021212010012 is 21001021212021.

It is a junction number, because it is equal to n+sod(n) for n = 12021212009973 and 12021212010000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021212010019) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71804562 + ... + 71971782.

Almost surely, 2^{12021212010012} is an apocalyptic number.

12021212010012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12021212010012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15696848207040).

12021212010012 is an abundant number, since it is smaller than the sum of its proper divisors (19372484404068).

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

12021212010012 is a wasteful number, since it uses less digits than its factorization.

12021212010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168372 (or 168353 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12021212010012 its reverse (21001021212021), we get a palindrome (33022233222033).

The spelling of 12021212010012 in words is "twelve trillion, twenty-one billion, two hundred twelve million, ten thousand, twelve".