220111020020 has 96 divisors (see below), whose sum is σ = 494218609920. Its totient is φ = 82057226240.

The previous prime is 220111020007. The next prime is 220111020043. The reversal of 220111020020 is 20020111022.

It is a happy number.

It is a super-2 number, since 2×220111020020² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220111019983 and 220111020010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15266615 + ... + 15281025.

It is an arithmetic number, because the mean of its divisors is an integer number (5148110520).

Almost surely, 2^220111020020 is an apocalyptic number.

220111020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220111020020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247109304960).

220111020020 is an abundant number, since it is smaller than the sum of its proper divisors (274107589900).

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

220111020020 is a wasteful number, since it uses less digits than its factorization.

220111020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14873 (or 14871 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 220111020020 its reverse (20020111022), we get a palindrome (240131131042).

The spelling of 220111020020 in words is "two hundred twenty billion, one hundred eleven million, twenty thousand, twenty".