210220211101 has 2 divisors, whose sum is σ = 210220211102. Its totient is φ = 210220211100.

The previous prime is 210220211093. The next prime is 210220211137. The reversal of 210220211101 is 101112022012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181616607225 + 28603603876 = 426165^2 + 169126^2 .

It is a cyclic number.

It is not a de Polignac number, because 210220211101 - 2³ = 210220211093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210220211401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105110105550 + 105110105551.

It is an arithmetic number, because the mean of its divisors is an integer number (105110105551).

Almost surely, 2^210220211101 is an apocalyptic number.

It is an amenable number.

210220211101 is a deficient number, since it is larger than the sum of its proper divisors (1).

210220211101 is an equidigital number, since it uses as much as digits as its factorization.

210220211101 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 13.

Adding to 210220211101 its reverse (101112022012), we get a palindrome (311332233113).

The spelling of 210220211101 in words is "two hundred ten billion, two hundred twenty million, two hundred eleven thousand, one hundred one".