210020020211101 has 2 divisors, whose sum is σ = 210020020211102. Its totient is φ = 210020020211100.

The previous prime is 210020020211081. The next prime is 210020020211107. The reversal of 210020020211101 is 101112020020012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196320590988025 + 13699429223076 = 14011445^2 + 3701274^2 .

It is a cyclic number.

It is not a de Polignac number, because 210020020211101 - 2¹⁵ = 210020020178333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210020020211107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105010010105550 + 105010010105551.

It is an arithmetic number, because the mean of its divisors is an integer number (105010010105551).

Almost surely, 2^{210020020211101} is an apocalyptic number.

It is an amenable number.

210020020211101 is a deficient number, since it is larger than the sum of its proper divisors (1).

210020020211101 is an equidigital number, since it uses as much as digits as its factorization.

210020020211101 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 210020020211101 its reverse (101112020020012), we get a palindrome (311132040231113).

The spelling of 210020020211101 in words is "two hundred ten trillion, twenty billion, twenty million, two hundred eleven thousand, one hundred one".