1212200012212 has 24 divisors (see below), whose sum is σ = 2433412679040.
Its totient is φ = 517583007840.
The previous prime is 1212200012201. The next prime is 1212200012213. The reversal of 1212200012212 is 2122100022121.
Adding to 1212200012212 its reverse (2122100022121), we get a palindrome (3334300034333).
Subtracting 1212200012212 from its reverse (2122100022121), we obtain a palindrome (909900009909).
It is a happy number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1212200012213) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80462464 + ... + 80477527.
It is an arithmetic number, because the mean of its divisors is an integer number (101392194960).
Almost surely, 21212200012212 is an apocalyptic number.
It is an amenable number.
1212200012212 is an abundant number, since it is smaller than the sum of its proper divisors (1221212666828).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1212200012212 is a wasteful number, since it uses less digits than its factorization.
1212200012212 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 160940271 (or 160940269 counting only the distinct ones).
The product of its (nonzero) digits is 64, while the sum is 16.
The spelling of 1212200012212 in words is "one trillion, two hundred twelve billion, two hundred million, twelve thousand, two hundred twelve".