1200031111120 has 80 divisors (see below), whose sum is σ = 2960864331840. Its totient is φ = 450756380672.

The previous prime is 1200031111079. The next prime is 1200031111121. The reversal of 1200031111120 is 211111300021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 1200031111120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200031111121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393430 + ... + 1598389.

It is an arithmetic number, because the mean of its divisors is an integer number (37010804148).

Almost surely, 2^{1200031111120} is an apocalyptic number.

1200031111120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200031111120 is an abundant number, since it is smaller than the sum of its proper divisors (1760833220720).

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

1200031111120 is a wasteful number, since it uses less digits than its factorization.

1200031111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992292 (or 1992286 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1200031111120 its reverse (211111300021), we get a palindrome (1411142411141).

The spelling of 1200031111120 in words is "one trillion, two hundred billion, thirty-one million, one hundred eleven thousand, one hundred twenty".