1200020110110 has 96 divisors (see below), whose sum is σ = 3179382474528. Its totient is φ = 313921969920.

The previous prime is 1200020110033. The next prime is 1200020110111. The reversal of 1200020110110 is 110110200021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1200020110092 and 1200020110101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200020110111) 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 47 ways as a sum of consecutive naturals, for example, 43970529 + ... + 43997811.

It is an arithmetic number, because the mean of its divisors is an integer number (33118567443).

Almost surely, 2^{1200020110110} is an apocalyptic number.

1200020110110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200020110110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1589691237264).

1200020110110 is an abundant number, since it is smaller than the sum of its proper divisors (1979362364418).

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

1200020110110 is a wasteful number, since it uses less digits than its factorization.

1200020110110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36570 (or 36567 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1200020110110 its reverse (110110200021), we get a palindrome (1310130310131).

The spelling of 1200020110110 in words is "one trillion, two hundred billion, twenty million, one hundred ten thousand, one hundred ten".