220220020020221 has 16 divisors (see below), whose sum is σ = 238895546017968. Its totient is φ = 201794866790400.

The previous prime is 220220020020193. The next prime is 220220020020263. The reversal of 220220020020221 is 122020020022022.

220220020020221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 23767867552900 + 196452152467321 = 4875230^2 + 14016139^2 .

It is a de Polignac number, because none of the positive numbers 2^k-220220020020221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220220020020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220220020020271) 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, 48681860 + ... + 53012861.

It is an arithmetic number, because the mean of its divisors is an integer number (14930971626123).

Almost surely, 2^{220220020020221} is an apocalyptic number.

It is an amenable number.

220220020020221 is a deficient number, since it is larger than the sum of its proper divisors (18675525997747).

220220020020221 is a wasteful number, since it uses less digits than its factorization.

220220020020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101695952.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 220220020020221 its reverse (122020020022022), we get a palindrome (342240040042243).

The spelling of 220220020020221 in words is "two hundred twenty trillion, two hundred twenty billion, twenty million, twenty thousand, two hundred twenty-one".