1200221121112 has 32 divisors (see below), whose sum is σ = 2437062692400. Its totient is φ = 550853518464.

The previous prime is 1200221121097. The next prime is 1200221121173. The reversal of 1200221121112 is 2111211220021.

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 7 ways as a sum of consecutive naturals, for example, 32217663 + ... + 32254894.

Almost surely, 2^{1200221121112} is an apocalyptic number.

It is an amenable number.

1200221121112 is an abundant number, since it is smaller than the sum of its proper divisors (1236841571288).

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

1200221121112 is a wasteful number, since it uses less digits than its factorization.

1200221121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64472755 (or 64472751 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1200221121112 its reverse (2111211220021), we get a palindrome (3311432341133).

The spelling of 1200221121112 in words is "one trillion, two hundred billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred twelve".