1200112222000 has 160 divisors (see below), whose sum is σ = 2934608833728. Its totient is φ = 474656000000.

The previous prime is 1200112221941. The next prime is 1200112222009. The reversal of 1200112222000 is 2222110021.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1200112222009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73613850 + ... + 73630150.

Almost surely, 2^{1200112222000} is an apocalyptic number.

1200112222000 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 1200112222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1467304416864).

1200112222000 is an abundant number, since it is smaller than the sum of its proper divisors (1734496611728).

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

1200112222000 is a wasteful number, since it uses less digits than its factorization.

1200112222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16736 (or 16720 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1200112222000 its reverse (2222110021), we get a palindrome (1202334332021).

The spelling of 1200112222000 in words is "one trillion, two hundred billion, one hundred twelve million, two hundred twenty-two thousand".