110120120020 has 24 divisors (see below), whose sum is σ = 237502314504. Its totient is φ = 42857559936.

The previous prime is 110120120017. The next prime is 110120120039. The reversal of 110120120020 is 20021021011.

It can be written as a sum of positive squares in 4 ways, for example, as 63264322576 + 46855797444 = 251524^2 + 216462^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 110120119979 and 110120120006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74404747 + ... + 74406226.

It is an arithmetic number, because the mean of its divisors is an integer number (9895929771).

Almost surely, 2^110120120020 is an apocalyptic number.

110120120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

110120120020 is an abundant number, since it is smaller than the sum of its proper divisors (127382194484).

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

110120120020 is a wasteful number, since it uses less digits than its factorization.

110120120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148811019 (or 148811017 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 110120120020 its reverse (20021021011), we get a palindrome (130141141031).

Subtracting from 110120120020 its reverse (20021021011), we obtain a palindrome (90099099009).

The spelling of 110120120020 in words is "one hundred ten billion, one hundred twenty million, one hundred twenty thousand, twenty".