220021111112020 has 384 divisors, whose sum is σ = 521648709120000. Its totient is φ = 77560617885696.

The previous prime is 220021111111979. The next prime is 220021111112063. The reversal of 220021111112020 is 20211111120022.

It is a junction number, because it is equal to n+sod(n) for n = 220021111111985 and 220021111112003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 41536926012 + ... + 41536931308.

It is an arithmetic number, because the mean of its divisors is an integer number (1358460180000).

Almost surely, 2^{220021111112020} is an apocalyptic number.

220021111112020 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 220021111112020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260824354560000).

220021111112020 is an abundant number, since it is smaller than the sum of its proper divisors (301627598007980).

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

220021111112020 is a wasteful number, since it uses less digits than its factorization.

220021111112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6255 (or 6253 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 220021111112020 its reverse (20211111120022), we get a palindrome (240232222232042).

The spelling of 220021111112020 in words is "two hundred twenty trillion, twenty-one billion, one hundred eleven million, one hundred twelve thousand, twenty".