1220112100200 has 96 divisors (see below), whose sum is σ = 4322682884160. Its totient is φ = 278882764800.

The previous prime is 1220112100177. The next prime is 1220112100231. The reversal of 1220112100200 is 20012110221.

It is a Harshad number since it is a multiple of its sum of digits (12).

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 23 ways as a sum of consecutive naturals, for example, 145247241 + ... + 145255640.

It is an arithmetic number, because the mean of its divisors is an integer number (45027946710).

Almost surely, 2^{1220112100200} is an apocalyptic number.

1220112100200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220112100200 is an abundant number, since it is smaller than the sum of its proper divisors (3102570783960).

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

1220112100200 is a wasteful number, since it uses less digits than its factorization.

1220112100200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290502907 (or 290502898 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1220112100200 its reverse (20012110221), we get a palindrome (1240124210421).

The spelling of 1220112100200 in words is "one trillion, two hundred twenty billion, one hundred twelve million, one hundred thousand, two hundred".