1200122212200 has 96 divisors (see below), whose sum is σ = 3724814721600. Its totient is φ = 319651010560.

The previous prime is 1200122212181. The next prime is 1200122212217. The reversal of 1200122212200 is 22122210021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1200122212200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 688617 + ... + 1695416.

It is an arithmetic number, because the mean of its divisors is an integer number (38800153350).

Almost surely, 2^{1200122212200} is an apocalyptic number.

1200122212200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200122212200 is an abundant number, since it is smaller than the sum of its proper divisors (2524692509400).

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

1200122212200 is a wasteful number, since it uses less digits than its factorization.

1200122212200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384891 (or 2384882 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1200122212200 its reverse (22122210021), we get a palindrome (1222244422221).

The spelling of 1200122212200 in words is "one trillion, two hundred billion, one hundred twenty-two million, two hundred twelve thousand, two hundred".