220112102010221 has 2 divisors, whose sum is σ = 220112102010222. Its totient is φ = 220112102010220.

The previous prime is 220112102010217. The next prime is 220112102010271. The reversal of 220112102010221 is 122010201211022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195218488587721 + 24893613422500 = 13972061^2 + 4989350^2 .

It is a cyclic number.

It is not a de Polignac number, because 220112102010221 - 2² = 220112102010217 is a prime.

It is a super-3 number, since 3×220112102010221³ (a number of 44 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220112102010221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220112102010271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110056051005110 + 110056051005111.

It is an arithmetic number, because the mean of its divisors is an integer number (110056051005111).

Almost surely, 2^{220112102010221} is an apocalyptic number.

It is an amenable number.

220112102010221 is a deficient number, since it is larger than the sum of its proper divisors (1).

220112102010221 is an equidigital number, since it uses as much as digits as its factorization.

220112102010221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 220112102010221 its reverse (122010201211022), we get a palindrome (342122303221243).

The spelling of 220112102010221 in words is "two hundred twenty trillion, one hundred twelve billion, one hundred two million, ten thousand, two hundred twenty-one".