201010010102101 has 4 divisors (see below), whose sum is σ = 201030885593100. Its totient is φ = 200989134611104.

The previous prime is 201010010102087. The next prime is 201010010102159. The reversal of 201010010102101 is 101201010010102.

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 118911369813201 + 82098640288900 = 10904649^2 + 9060830^2 .

It is a cyclic number.

It is not a de Polignac number, because 201010010102101 - 2²⁵ = 201009976547669 is a prime.

It is a super-2 number, since 2×201010010102101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201010010102171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10437731056 + ... + 10437750313.

It is an arithmetic number, because the mean of its divisors is an integer number (50257721398275).

Almost surely, 2^{201010010102101} is an apocalyptic number.

It is an amenable number.

201010010102101 is a deficient number, since it is larger than the sum of its proper divisors (20875490999).

201010010102101 is an equidigital number, since it uses as much as digits as its factorization.

201010010102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20875490998.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 201010010102101 its reverse (101201010010102), we get a palindrome (302211020112203).

It can be divided in two parts, 201010010102 and 101, that multiplied together give a palindrome (20302011020302).

The spelling of 201010010102101 in words is "two hundred one trillion, ten billion, ten million, one hundred two thousand, one hundred one".