1200012022200 has 48 divisors (see below), whose sum is σ = 3720037270680. Its totient is φ = 320003205760.

The previous prime is 1200012022169. The next prime is 1200012022219. The reversal of 1200012022200 is 22202100021.

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

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 1000009419 + ... + 1000010618.

Almost surely, 2^{1200012022200} is an apocalyptic number.

1200012022200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200012022200 is an abundant number, since it is smaller than the sum of its proper divisors (2520025248480).

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

1200012022200 is a wasteful number, since it uses less digits than its factorization.

1200012022200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000020056 (or 2000020047 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 1200012022200 its reverse (22202100021), we get a palindrome (1222214122221).

The spelling of 1200012022200 in words is "one trillion, two hundred billion, twelve million, twenty-two thousand, two hundred".