220020220000021 has 40 divisors (see below), whose sum is σ = 264094127385760. Its totient is φ = 183156274907424.

The previous prime is 220020219999949. The next prime is 220020220000109. The reversal of 220020220000021 is 120000022020022.

220020220000021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220020220000021 - 2⁷ = 220020219999893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220020219999956 and 220020220000010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220020220060021) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 46329970 + ... + 50857708.

It is an arithmetic number, because the mean of its divisors is an integer number (6602353184644).

Almost surely, 2^{220020220000021} is an apocalyptic number.

It is an amenable number.

220020220000021 is a deficient number, since it is larger than the sum of its proper divisors (44073907385739).

220020220000021 is an frugal number, since it uses more digits than its factorization.

220020220000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4528351 (or 4528330 counting only the distinct ones).

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

Adding to 220020220000021 its reverse (120000022020022), we get a palindrome (340020242020043).

The spelling of 220020220000021 in words is "two hundred twenty trillion, twenty billion, two hundred twenty million, twenty-one", and thus it is an aban number.