20022100000020 has 192 divisors, whose sum is σ = 65809986278400. Its totient is φ = 5045431910400.

The previous prime is 20022100000009. The next prime is 20022100000109. The reversal of 20022100000020 is 2000000122002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20022099999948 and 20022100000011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12865581 + ... + 14337620.

It is an arithmetic number, because the mean of its divisors is an integer number (342760345200).

Almost surely, 2^{20022100000020} is an apocalyptic number.

20022100000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20022100000020 is an abundant number, since it is smaller than the sum of its proper divisors (45787886278380).

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

20022100000020 is a wasteful number, since it uses less digits than its factorization.

20022100000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27203295 (or 27203287 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20022100000020 its reverse (2000000122002), we get a palindrome (22022100122022).

The spelling of 20022100000020 in words is "twenty trillion, twenty-two billion, one hundred million, twenty", and thus it is an aban number.