12211212120012 has 48 divisors (see below), whose sum is σ = 31682555806720. Its totient is φ = 4067336619216.

The previous prime is 12211212119993. The next prime is 12211212120077. The reversal of 12211212120012 is 21002121211221.

It is a super-2 number, since 2×12211212120012² (a number of 27 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42459088 + ... + 42745719.

Almost surely, 2^{12211212120012} is an apocalyptic number.

12211212120012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12211212120012 is an abundant number, since it is smaller than the sum of its proper divisors (19471343686708).

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

12211212120012 is a wasteful number, since it uses less digits than its factorization.

12211212120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85206147 (or 85206139 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12211212120012 its reverse (21002121211221), we get a palindrome (33213333331233).

The spelling of 12211212120012 in words is "twelve trillion, two hundred eleven billion, two hundred twelve million, one hundred twenty thousand, twelve".