110020 has 12 divisors (see below), whose sum is σ = 231084. Its totient is φ = 44000.

The previous prime is 110017. The next prime is 110023. The reversal of 110020 is 20011.

It is an interprime number because it is at equal distance from previous prime (110017) and next prime (110023).

It can be written as a sum of positive squares in 2 ways, for example, as 81796 + 28224 = 286^2 + 168^2 .

It is a Harshad number since it is a multiple of its sum of digits (4).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 109991 and 110009.

It is not an unprimeable number, because it can be changed into a prime (110023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2731 + ... + 2770.

It is an arithmetic number, because the mean of its divisors is an integer number (19257).

2¹¹⁰⁰²⁰ is an apocalyptic number.

110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

110020 is an abundant number, since it is smaller than the sum of its proper divisors (121064).

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

110020 is a wasteful number, since it uses less digits than its factorization.

110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5510 (or 5508 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 4.

The square root of 110020 is about 331.6926287996. The cubic root of 110020 is about 47.9171022855.

Adding to 110020 its reverse (20011), we get a palindrome (130031).

Subtracting from 110020 its reverse (20011), we obtain a palindrome (90009).

The spelling of 110020 in words is "one hundred ten thousand, twenty", and thus it is an iban number.