111220320110420 has 24 divisors (see below), whose sum is σ = 233622729652200. Its totient is φ = 44476688535552.

The previous prime is 111220320110399. The next prime is 111220320110429. The reversal of 111220320110420 is 24011023022111.

It can be written as a sum of positive squares in 4 ways, for example, as 27601805002564 + 83618515107856 = 5253742^2 + 9144316^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 111220320110392 and 111220320110401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220320110429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 714889565 + ... + 715045124.

It is an arithmetic number, because the mean of its divisors is an integer number (9734280402175).

Almost surely, 2^{111220320110420} is an apocalyptic number.

111220320110420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111220320110420 is an abundant number, since it is smaller than the sum of its proper divisors (122402409541780).

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

111220320110420 is a wasteful number, since it uses less digits than its factorization.

111220320110420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429938587 (or 1429938585 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 111220320110420 its reverse (24011023022111), we get a palindrome (135231343132531).

The spelling of 111220320110420 in words is "one hundred eleven trillion, two hundred twenty billion, three hundred twenty million, one hundred ten thousand, four hundred twenty".