201210001020101 has 4 divisors (see below), whose sum is σ = 203966302404012. Its totient is φ = 198453699636192.

The previous prime is 201210001020043. The next prime is 201210001020157. The reversal of 201210001020101 is 101020100012102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46938050788225 + 154271950231876 = 6851135^2 + 12420626^2 .

It is a cyclic number.

It is not a de Polignac number, because 201210001020101 - 2³⁰ = 201208927278277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201210001020601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1378150691846 + ... + 1378150691991.

It is an arithmetic number, because the mean of its divisors is an integer number (50991575601003).

Almost surely, 2^{201210001020101} is an apocalyptic number.

It is an amenable number.

201210001020101 is a deficient number, since it is larger than the sum of its proper divisors (2756301383911).

201210001020101 is an equidigital number, since it uses as much as digits as its factorization.

201210001020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2756301383910.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201210001020101 its reverse (101020100012102), we get a palindrome (302230101032203).

The spelling of 201210001020101 in words is "two hundred one trillion, two hundred ten billion, one million, twenty thousand, one hundred one".