21222000122020 has 24 divisors (see below), whose sum is σ = 44571215392704. Its totient is φ = 8487844784736.

The previous prime is 21222000121957. The next prime is 21222000122039. The reversal of 21222000122020 is 2022100022212.

21222000122020 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 21222000121985 and 21222000122003.

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, 59521822 + ... + 59877301.

It is an arithmetic number, because the mean of its divisors is an integer number (1857133974696).

Almost surely, 2^{21222000122020} is an apocalyptic number.

21222000122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21222000122020 is an abundant number, since it is smaller than the sum of its proper divisors (23349215270684).

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

21222000122020 is a wasteful number, since it uses less digits than its factorization.

21222000122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119408019 (or 119408017 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21222000122020 its reverse (2022100022212), we get a palindrome (23244100144232).

The spelling of 21222000122020 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred twenty-two thousand, twenty".