220021220002221 has 144 divisors (see below), whose sum is σ = 372162672161280. Its totient is φ = 124727066956800.

The previous prime is 220021220002189. The next prime is 220021220002271. The reversal of 220021220002221 is 122200022120022.

220021220002221 is a `hidden beast` number, since 2 + 200 + 21 + 220 + 0 + 0 + 2 + 221 = 666.

220021220002221 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 220021220002221 - 2⁵ = 220021220002189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220021220002194 and 220021220002203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220021220002271) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5304379560 + ... + 5304421038.

It is an arithmetic number, because the mean of its divisors is an integer number (2584463001120).

Almost surely, 2^{220021220002221} is an apocalyptic number.

It is an amenable number.

220021220002221 is a deficient number, since it is larger than the sum of its proper divisors (152141452159059).

220021220002221 is a wasteful number, since it uses less digits than its factorization.

220021220002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43288 (or 43274 counting only the distinct ones).

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

Adding to 220021220002221 its reverse (122200022120022), we get a palindrome (342221242122243).

The spelling of 220021220002221 in words is "two hundred twenty trillion, twenty-one billion, two hundred twenty million, two thousand, two hundred twenty-one".