111010001001020 has 96 divisors (see below), whose sum is σ = 255800915225856. Its totient is φ = 40131648345600.

The previous prime is 111010001000999. The next prime is 111010001001047. The reversal of 111010001001020 is 20100100010111.

It is a happy number.

It is a super-2 number, since 2×111010001001020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111010001000989 and 111010001001007.

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, 40784624 + ... + 43421256.

It is an arithmetic number, because the mean of its divisors is an integer number (2664592866936).

Almost surely, 2^{111010001001020} is an apocalyptic number.

111010001001020 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 111010001001020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127900457612928).

111010001001020 is an abundant number, since it is smaller than the sum of its proper divisors (144790914224836).

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

111010001001020 is a wasteful number, since it uses less digits than its factorization.

111010001001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637771 (or 2637769 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 111010001001020 its reverse (20100100010111), we get a palindrome (131110101011131).

Subtracting from 111010001001020 its reverse (20100100010111), we obtain a palindrome (90909900990909).

The spelling of 111010001001020 in words is "one hundred eleven trillion, ten billion, one million, one thousand, twenty".