111110021002120 has 256 divisors, whose sum is σ = 304823881152000. Its totient is φ = 35580924739584.

The previous prime is 111110021002087. The next prime is 111110021002121. The reversal of 111110021002120 is 21200120011111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 111110021002120.

It is not an unprimeable number, because it can be changed into a prime (111110021002121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1612382226 + ... + 1612451134.

It is an arithmetic number, because the mean of its divisors is an integer number (1190718285750).

Almost surely, 2^{111110021002120} is an apocalyptic number.

111110021002120 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 111110021002120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152411940576000).

111110021002120 is an abundant number, since it is smaller than the sum of its proper divisors (193713860149880).

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

111110021002120 is a wasteful number, since it uses less digits than its factorization.

111110021002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71520 (or 71516 counting only the distinct ones).

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

Adding to 111110021002120 its reverse (21200120011111), we get a palindrome (132310141013231).

The spelling of 111110021002120 in words is "one hundred eleven trillion, one hundred ten billion, twenty-one million, two thousand, one hundred twenty".