1212111000200 has 72 divisors (see below), whose sum is σ = 2974288893930. Its totient is φ = 459326246400.

The previous prime is 1212111000103. The next prime is 1212111000211. The reversal of 1212111000200 is 20001112121.

It can be written as a sum of positive squares in 3 ways, for example, as 1178410118116 + 33700882084 = 1085546^2 + 183578^2 .

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 8321921 + ... + 8466320.

Almost surely, 2^{1212111000200} is an apocalyptic number.

1212111000200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212111000200 is an abundant number, since it is smaller than the sum of its proper divisors (1762177893730).

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

1212111000200 is a wasteful number, since it uses less digits than its factorization.

1212111000200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16788295 (or 16788267 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1212111000200 its reverse (20001112121), we get a palindrome (1232112112321).

The spelling of 1212111000200 in words is "one trillion, two hundred twelve billion, one hundred eleven million, two hundred", and thus it is an aban number.