1212200220200 has 144 divisors (see below), whose sum is σ = 2990221946880. Its totient is φ = 456873310080.

The previous prime is 1212200220167. The next prime is 1212200220211. The reversal of 1212200220200 is 20220022121.

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 35 ways as a sum of consecutive naturals, for example, 7003097 + ... + 7174103.

Almost surely, 2^{1212200220200} is an apocalyptic number.

1212200220200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212200220200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1495110973440).

1212200220200 is an abundant number, since it is smaller than the sum of its proper divisors (1778021726680).

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

1212200220200 is a wasteful number, since it uses less digits than its factorization.

1212200220200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171136 (or 171104 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1212200220200 its reverse (20220022121), we get a palindrome (1232420242321).

The spelling of 1212200220200 in words is "one trillion, two hundred twelve billion, two hundred million, two hundred twenty thousand, two hundred".