1212210012200 has 48 divisors (see below), whose sum is σ = 3074605400160. Its totient is φ = 440803640000.

The previous prime is 1212210012127. The next prime is 1212210012227. The reversal of 1212210012200 is 22100122121.

It is a super-2 number, since 2×1212210012200² (a number of 25 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 275500076 + ... + 275504475.

It is an arithmetic number, because the mean of its divisors is an integer number (64054279170).

Almost surely, 2^{1212210012200} is an apocalyptic number.

1212210012200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212210012200 is an abundant number, since it is smaller than the sum of its proper divisors (1862395387960).

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

1212210012200 is a wasteful number, since it uses less digits than its factorization.

1212210012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551004578 (or 551004569 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1212210012200 its reverse (22100122121), we get a palindrome (1234310134321).

The spelling of 1212210012200 in words is "one trillion, two hundred twelve billion, two hundred ten million, twelve thousand, two hundred".