220112021102021 has 2 divisors, whose sum is σ = 220112021102022. Its totient is φ = 220112021102020.

The previous prime is 220112021102011. The next prime is 220112021102123. The reversal of 220112021102021 is 120201120211022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137304751079521 + 82807270022500 = 11717711^2 + 9099850^2 .

It is a cyclic number.

It is not a de Polignac number, because 220112021102021 - 2¹⁴ = 220112021085637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220112021102011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110056010551010 + 110056010551011.

It is an arithmetic number, because the mean of its divisors is an integer number (110056010551011).

Almost surely, 2^{220112021102021} is an apocalyptic number.

It is an amenable number.

220112021102021 is a deficient number, since it is larger than the sum of its proper divisors (1).

220112021102021 is an equidigital number, since it uses as much as digits as its factorization.

220112021102021 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 220112021102021 its reverse (120201120211022), we get a palindrome (340313141313043).

The spelling of 220112021102021 in words is "two hundred twenty trillion, one hundred twelve billion, twenty-one million, one hundred two thousand, twenty-one".