1111102021120 has 320 divisors, whose sum is σ = 3293420207616. Its totient is φ = 350079713280.

The previous prime is 1111102021087. The next prime is 1111102021199. The reversal of 1111102021120 is 211202011111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 1111102021120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52871415 + ... + 52892425.

Almost surely, 2^{1111102021120} is an apocalyptic number.

1111102021120 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 1111102021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1646710103808).

1111102021120 is an abundant number, since it is smaller than the sum of its proper divisors (2182318186496).

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

1111102021120 is a wasteful number, since it uses less digits than its factorization.

1111102021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21281 (or 21265 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1111102021120 its reverse (211202011111), we get a palindrome (1322304032231).

The spelling of 1111102021120 in words is "one trillion, one hundred eleven billion, one hundred two million, twenty-one thousand, one hundred twenty".