111003112123220 has 12 divisors (see below), whose sum is σ = 233106535458804. Its totient is φ = 44401244849280.

The previous prime is 111003112123213. The next prime is 111003112123247. The reversal of 111003112123220 is 22321211300111.

It can be written as a sum of positive squares in 2 ways, for example, as 69048189106576 + 41954923016644 = 8309524^2 + 6477262^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 5550155606161 = 111003112123220 / (1 + 1 + 1 + 0 + 0 + 3 + 1 + 1 + 2 + 1 + 2 + 3 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 111003112123192 and 111003112123201.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2775077803061 + ... + 2775077803100.

It is an arithmetic number, because the mean of its divisors is an integer number (19425544621567).

Almost surely, 2^{111003112123220} is an apocalyptic number.

111003112123220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111003112123220 is an abundant number, since it is smaller than the sum of its proper divisors (122103423335584).

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

111003112123220 is a wasteful number, since it uses less digits than its factorization.

111003112123220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5550155606170 (or 5550155606168 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 111003112123220 its reverse (22321211300111), we get a palindrome (133324323423331).

The spelling of 111003112123220 in words is "one hundred eleven trillion, three billion, one hundred twelve million, one hundred twenty-three thousand, two hundred twenty".