220102210200221 has 2 divisors, whose sum is σ = 220102210200222. Its totient is φ = 220102210200220.

The previous prime is 220102210200167. The next prime is 220102210200269. The reversal of 220102210200221 is 122002012201022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215772273477721 + 4329936722500 = 14689189^2 + 2080850^2 .

It is a cyclic number.

It is not a de Polignac number, because 220102210200221 - 2¹⁰ = 220102210199197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220102210200221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220102210260221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110051105100110 + 110051105100111.

It is an arithmetic number, because the mean of its divisors is an integer number (110051105100111).

Almost surely, 2^{220102210200221} is an apocalyptic number.

It is an amenable number.

220102210200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

220102210200221 is an equidigital number, since it uses as much as digits as its factorization.

220102210200221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 220102210200221 its reverse (122002012201022), we get a palindrome (342104222401243).

The spelling of 220102210200221 in words is "two hundred twenty trillion, one hundred two billion, two hundred ten million, two hundred thousand, two hundred twenty-one".