1212320012200 has 96 divisors (see below), whose sum is σ = 3075465568320. Its totient is φ = 440760320000.

The previous prime is 1212320012161. The next prime is 1212320012209. The reversal of 1212320012200 is 22100232121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1212320012209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12250920 + ... + 12349480.

It is an arithmetic number, because the mean of its divisors is an integer number (32036099670).

Almost surely, 2^{1212320012200} is an apocalyptic number.

1212320012200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212320012200 is an abundant number, since it is smaller than the sum of its proper divisors (1863145556120).

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

1212320012200 is a wasteful number, since it uses less digits than its factorization.

1212320012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104179 (or 104170 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1212320012200 its reverse (22100232121), we get a palindrome (1234420244321).

The spelling of 1212320012200 in words is "one trillion, two hundred twelve billion, three hundred twenty million, twelve thousand, two hundred".