12011221000212 has 72 divisors (see below), whose sum is σ = 32646002971680. Its totient is φ = 3427133492160.

The previous prime is 12011221000189. The next prime is 12011221000223. The reversal of 12011221000212 is 21200012211021.

It is a junction number, because it is equal to n+sod(n) for n = 12011221000191 and 12011221000200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13386339 + ... + 14255402.

It is an arithmetic number, because the mean of its divisors is an integer number (453416707940).

Almost surely, 2^{12011221000212} is an apocalyptic number.

12011221000212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12011221000212 is an abundant number, since it is smaller than the sum of its proper divisors (20634781971468).

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

12011221000212 is a wasteful number, since it uses less digits than its factorization.

12011221000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27642501 (or 27642492 counting only the distinct ones).

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

Adding to 12011221000212 its reverse (21200012211021), we get a palindrome (33211233211233).

The spelling of 12011221000212 in words is "twelve trillion, eleven billion, two hundred twenty-one million, two hundred twelve", and thus it is an aban number.