220020210101 has 2 divisors, whose sum is σ = 220020210102. Its totient is φ = 220020210100.

The previous prime is 220020210043. The next prime is 220020210103. The reversal of 220020210101 is 101012020022.

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., 190729599076 + 29290611025 = 436726^2 + 171145^2 .

It is a cyclic number.

It is not a de Polignac number, because 220020210101 - 2⁶ = 220020210037 is a prime.

It is a Sophie Germain prime.

Together with 220020210103, it forms a pair of twin primes.

It is a Chen 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 (220020210103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110010105050 + 110010105051.

It is an arithmetic number, because the mean of its divisors is an integer number (110010105051).

Almost surely, 2^220020210101 is an apocalyptic number.

It is an amenable number.

220020210101 is a deficient number, since it is larger than the sum of its proper divisors (1).

220020210101 is an equidigital number, since it uses as much as digits as its factorization.

220020210101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 220020210101 its reverse (101012020022), we get a palindrome (321032230123).

The spelling of 220020210101 in words is "two hundred twenty billion, twenty million, two hundred ten thousand, one hundred one".