201000120122101 has 4 divisors (see below), whose sum is σ = 201009522778092. Its totient is φ = 200990717466112.

The previous prime is 201000120122093. The next prime is 201000120122147. The reversal of 201000120122101 is 101221021000102.

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 14890908547876 + 186109211574225 = 3858874^2 + 13642185^2 .

It is a cyclic number.

It is not a de Polignac number, because 201000120122101 - 2³ = 201000120122093 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 (201000120122161) 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, 4701295930 + ... + 4701338683.

It is an arithmetic number, because the mean of its divisors is an integer number (50252380694523).

Almost surely, 2^{201000120122101} is an apocalyptic number.

It is an amenable number.

201000120122101 is a deficient number, since it is larger than the sum of its proper divisors (9402655991).

201000120122101 is an equidigital number, since it uses as much as digits as its factorization.

201000120122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9402655990.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201000120122101 its reverse (101221021000102), we get a palindrome (302221141122203).

The spelling of 201000120122101 in words is "two hundred one trillion, one hundred twenty million, one hundred twenty-two thousand, one hundred one".