12012221212212 has 96 divisors (see below), whose sum is σ = 30255354976000. Its totient is φ = 3687408893952.

The previous prime is 12012221212207. The next prime is 12012221212249. The reversal of 12012221212212 is 21221212221021.

It is a super-2 number, since 2×12012221212212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115953414 + ... + 116056962.

Almost surely, 2^{12012221212212} is an apocalyptic number.

12012221212212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12012221212212 is an abundant number, since it is smaller than the sum of its proper divisors (18243133763788).

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

12012221212212 is a wasteful number, since it uses less digits than its factorization.

12012221212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105305 (or 105303 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12012221212212 its reverse (21221212221021), we get a palindrome (33233433433233).

The spelling of 12012221212212 in words is "twelve trillion, twelve billion, two hundred twenty-one million, two hundred twelve thousand, two hundred twelve".