220220020000021 has 16 divisors (see below), whose sum is σ = 226344332491200. Its totient is φ = 214104817358208.

The previous prime is 220220019999971. The next prime is 220220020000091. The reversal of 220220020000021 is 120000020022022.

It is a cyclic number.

It is not a de Polignac number, because 220220020000021 - 2¹⁵ = 220220019967253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220220019999956 and 220220020000010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220220020000091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460309425 + ... + 460787593.

It is an arithmetic number, because the mean of its divisors is an integer number (14146520780700).

Almost surely, 2^{220220020000021} is an apocalyptic number.

It is an amenable number.

220220020000021 is a deficient number, since it is larger than the sum of its proper divisors (6124312491179).

220220020000021 is a wasteful number, since it uses less digits than its factorization.

220220020000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487668.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 220220020000021 its reverse (120000020022022), we get a palindrome (340220040022043).

The spelling of 220220020000021 in words is "two hundred twenty trillion, two hundred twenty billion, twenty million, twenty-one", and thus it is an aban number.