201242321101 has 4 divisors (see below), whose sum is σ = 201406067100. Its totient is φ = 201078575104.

The previous prime is 201242321039. The next prime is 201242321153. The reversal of 201242321101 is 101123242102.

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 165331692100 + 35910629001 = 406610^2 + 189501^2 .

It is a cyclic number.

It is not a de Polignac number, because 201242321101 - 2²⁹ = 200705450189 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 (201242321701) 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, 81871156 + ... + 81873613.

It is an arithmetic number, because the mean of its divisors is an integer number (50351516775).

Almost surely, 2^201242321101 is an apocalyptic number.

It is an amenable number.

201242321101 is a deficient number, since it is larger than the sum of its proper divisors (163745999).

201242321101 is a wasteful number, since it uses less digits than its factorization.

201242321101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163745998.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 201242321101 its reverse (101123242102), we get a palindrome (302365563203).

The spelling of 201242321101 in words is "two hundred one billion, two hundred forty-two million, three hundred twenty-one thousand, one hundred one".