111220320020 has 24 divisors (see below), whose sum is σ = 233571063264. Its totient is φ = 44486529696.

The previous prime is 111220320017. The next prime is 111220320023. The reversal of 111220320020 is 20023022111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111220320017) and next prime (111220320023).

It is a junction number, because it is equal to n+sod(n) for n = 111220319977 and 111220320004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220320023) 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, 585359 + ... + 751721.

It is an arithmetic number, because the mean of its divisors is an integer number (9732127636).

Almost surely, 2^111220320020 is an apocalyptic number.

111220320020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111220320020 is an abundant number, since it is smaller than the sum of its proper divisors (122350743244).

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

111220320020 is a wasteful number, since it uses less digits than its factorization.

111220320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199799 (or 199797 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 111220320020 its reverse (20023022111), we get a palindrome (131243342131).

The spelling of 111220320020 in words is "one hundred eleven billion, two hundred twenty million, three hundred twenty thousand, twenty".