220020222120021 has 12 divisors (see below), whose sum is σ = 323193546617760. Its totient is φ = 144194043874920.

The previous prime is 220020222120001. The next prime is 220020222120029. The reversal of 220020222120021 is 120021222020022.

220020222120021 is a `hidden beast` number, since 2 + 20 + 0 + 202 + 221 + 200 + 21 = 666.

It is not a de Polignac number, because 220020222120021 - 2¹⁰ = 220020222118997 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 220020222119976 and 220020222120003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220020222120029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 207175349865 + ... + 207175350926.

It is an arithmetic number, because the mean of its divisors is an integer number (26932795551480).

Almost surely, 2^{220020222120021} is an apocalyptic number.

It is an amenable number.

220020222120021 is a deficient number, since it is larger than the sum of its proper divisors (103173324497739).

220020222120021 is a wasteful number, since it uses less digits than its factorization.

220020222120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414350700856 (or 414350700853 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 220020222120021 its reverse (120021222020022), we get a palindrome (340041444140043).

Subtracting from 220020222120021 its reverse (120021222020022), we obtain a palindrome (99999000099999).

The spelling of 220020222120021 in words is "two hundred twenty trillion, twenty billion, two hundred twenty-two million, one hundred twenty thousand, twenty-one".