1111200100120 has 128 divisors (see below), whose sum is σ = 2820425287680. Its totient is φ = 390350592000.

The previous prime is 1111200100111. The next prime is 1111200100123. The reversal of 1111200100120 is 210010021111.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1111200100097 and 1111200100106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111200100123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7717104 + ... + 7859776.

It is an arithmetic number, because the mean of its divisors is an integer number (22034572560).

Almost surely, 2^{1111200100120} is an apocalyptic number.

1111200100120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111200100120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1410212643840).

1111200100120 is an abundant number, since it is smaller than the sum of its proper divisors (1709225187560).

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

1111200100120 is a wasteful number, since it uses less digits than its factorization.

1111200100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143297 (or 143293 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1111200100120 its reverse (210010021111), we get a palindrome (1321210121231).

The spelling of 1111200100120 in words is "one trillion, one hundred eleven billion, two hundred million, one hundred thousand, one hundred twenty".