1212101200212 has 72 divisors (see below), whose sum is σ = 3290556294144. Its totient is φ = 346254910848.

The previous prime is 1212101200207. The next prime is 1212101200237. The reversal of 1212101200212 is 2120021012121.

It is a junction number, because it is equal to n+sod(n) for n = 1212101200191 and 1212101200200.

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, 3292653 + ... + 3642219.

It is an arithmetic number, because the mean of its divisors is an integer number (45702170752).

Almost surely, 2^{1212101200212} is an apocalyptic number.

1212101200212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212101200212 is an abundant number, since it is smaller than the sum of its proper divisors (2078455093932).

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

1212101200212 is a wasteful number, since it uses less digits than its factorization.

1212101200212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355485 (or 355476 counting only the distinct ones).

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

Adding to 1212101200212 its reverse (2120021012121), we get a palindrome (3332122212333).

The spelling of 1212101200212 in words is "one trillion, two hundred twelve billion, one hundred one million, two hundred thousand, two hundred twelve".