220110121220020 has 24 divisors (see below), whose sum is σ = 462231922404168. Its totient is φ = 88043921280000.

The previous prime is 220110121219841. The next prime is 220110121220149. The reversal of 220110121220020 is 20022121011022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3216520293156 + 216893600926864 = 1793466^2 + 14727308^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220110121219976 and 220110121220003.

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, 6916120 + ... + 22091920.

It is an arithmetic number, because the mean of its divisors is an integer number (19259663433507).

Almost surely, 2^{220110121220020} is an apocalyptic number.

220110121220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220110121220020 is an abundant number, since it is smaller than the sum of its proper divisors (242121801184148).

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

220110121220020 is a wasteful number, since it uses less digits than its factorization.

220110121220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15901011 (or 15901009 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 220110121220020 its reverse (20022121011022), we get a palindrome (240132242231042).

The spelling of 220110121220020 in words is "two hundred twenty trillion, one hundred ten billion, one hundred twenty-one million, two hundred twenty thousand, twenty".