1200011112020 has 96 divisors (see below), whose sum is σ = 3044187928320. Its totient is φ = 388160501760.

The previous prime is 1200011111953. The next prime is 1200011112037. The reversal of 1200011112020 is 202111100021.

It is a junction number, because it is equal to n+sod(n) for n = 1200011111992 and 1200011112010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 294899 + ... + 1577018.

It is an arithmetic number, because the mean of its divisors is an integer number (31710290920).

Almost surely, 2^{1200011112020} is an apocalyptic number.

1200011112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200011112020 is an abundant number, since it is smaller than the sum of its proper divisors (1844176816300).

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

1200011112020 is a wasteful number, since it uses less digits than its factorization.

1200011112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872193 (or 1872191 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1200011112020 its reverse (202111100021), we get a palindrome (1402122212041).

The spelling of 1200011112020 in words is "one trillion, two hundred billion, eleven million, one hundred twelve thousand, twenty".