1200222112112 has 60 divisors (see below), whose sum is σ = 2454990712056. Its totient is φ = 568357706880.

The previous prime is 1200222112081. The next prime is 1200222112157. The reversal of 1200222112112 is 2112112220021.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 20654843 + ... + 20712869.

Almost surely, 2^{1200222112112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200222112112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1227495356028).

1200222112112 is an abundant number, since it is smaller than the sum of its proper divisors (1254768599944).

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

1200222112112 is a wasteful number, since it uses less digits than its factorization.

1200222112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61654 (or 61629 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1200222112112 its reverse (2112112220021), we get a palindrome (3312334332133).

The spelling of 1200222112112 in words is "one trillion, two hundred billion, two hundred twenty-two million, one hundred twelve thousand, one hundred twelve".