201210210021101 has 2 divisors, whose sum is σ = 201210210021102. Its totient is φ = 201210210021100.

The previous prime is 201210210021083. The next prime is 201210210021109. The reversal of 201210210021101 is 101120012012102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149486079602500 + 51724130418601 = 12226450^2 + 7191949^2 .

It is a cyclic number.

It is not a de Polignac number, because 201210210021101 - 2¹⁰ = 201210210020077 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 (201210210021109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100605105010550 + 100605105010551.

It is an arithmetic number, because the mean of its divisors is an integer number (100605105010551).

Almost surely, 2^{201210210021101} is an apocalyptic number.

It is an amenable number.

201210210021101 is a deficient number, since it is larger than the sum of its proper divisors (1).

201210210021101 is an equidigital number, since it uses as much as digits as its factorization.

201210210021101 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 14.

Adding to 201210210021101 its reverse (101120012012102), we get a palindrome (302330222033203).

The spelling of 201210210021101 in words is "two hundred one trillion, two hundred ten billion, two hundred ten million, twenty-one thousand, one hundred one".