220101220020020 has 96 divisors (see below), whose sum is σ = 483984530507520. Its totient is φ = 83920081259520.

The previous prime is 220101220020007. The next prime is 220101220020053. The reversal of 220101220020020 is 20020022101022.

It is a junction number, because it is equal to n+sod(n) for n = 220101220019977 and 220101220020004.

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, 2765780591 + ... + 2765860169.

It is an arithmetic number, because the mean of its divisors is an integer number (5041505526120).

Almost surely, 2^{220101220020020} is an apocalyptic number.

220101220020020 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 220101220020020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241992265253760).

220101220020020 is an abundant number, since it is smaller than the sum of its proper divisors (263883310487500).

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

220101220020020 is a wasteful number, since it uses less digits than its factorization.

220101220020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100425 (or 100423 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 220101220020020 its reverse (20020022101022), we get a palindrome (240121242121042).

The spelling of 220101220020020 in words is "two hundred twenty trillion, one hundred one billion, two hundred twenty million, twenty thousand, twenty".