20110110120020 has 12 divisors (see below), whose sum is σ = 42231231252084. Its totient is φ = 8044044048000.

The previous prime is 20110110119977. The next prime is 20110110120031. The reversal of 20110110120020 is 2002101101102.

It can be written as a sum of positive squares in 2 ways, for example, as 13940112453316 + 6169997666704 = 3733646^2 + 2483948^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20110110119983 and 20110110120010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502752752981 + ... + 502752753020.

It is an arithmetic number, because the mean of its divisors is an integer number (3519269271007).

Almost surely, 2^{20110110120020} is an apocalyptic number.

20110110120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20110110120020 is an abundant number, since it is smaller than the sum of its proper divisors (22121121132064).

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

20110110120020 is a wasteful number, since it uses less digits than its factorization.

20110110120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005505506010 (or 1005505506008 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20110110120020 its reverse (2002101101102), we get a palindrome (22112211221122).

The spelling of 20110110120020 in words is "twenty trillion, one hundred ten billion, one hundred ten million, one hundred twenty thousand, twenty".