1200020321112 has 32 divisors (see below), whose sum is σ = 3012499160880. Its totient is φ = 398346992640.

The previous prime is 1200020321083. The next prime is 1200020321131. The reversal of 1200020321112 is 2111230200021.

It is a junction number, because it is equal to n+sod(n) for n = 1200020321091 and 1200020321100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103730413 + ... + 103741980.

Almost surely, 2^{1200020321112} is an apocalyptic number.

1200020321112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200020321112 is an abundant number, since it is smaller than the sum of its proper divisors (1812478839768).

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

1200020321112 is a wasteful number, since it uses less digits than its factorization.

1200020321112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207472643 (or 207472639 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1200020321112 its reverse (2111230200021), we get a palindrome (3311250521133).

The spelling of 1200020321112 in words is "one trillion, two hundred billion, twenty million, three hundred twenty-one thousand, one hundred twelve".