450201121 has 4 divisors (see below), whose sum is σ = 450612612. Its totient is φ = 449789632.

The previous prime is 450201091. The next prime is 450201139. The reversal of 450201121 is 121102054.

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 302238225 + 147962896 = 17385^2 + 12164^2 .

It is a cyclic number.

It is not a de Polignac number, because 450201121 - 2¹¹ = 450199073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 450201095 and 450201104.

It is not an unprimeable number, because it can be changed into a prime (450201161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204100 + ... + 206293.

It is an arithmetic number, because the mean of its divisors is an integer number (112653153).

Almost surely, 2^450201121 is an apocalyptic number.

It is an amenable number.

450201121 is a deficient number, since it is larger than the sum of its proper divisors (411491).

450201121 is a wasteful number, since it uses less digits than its factorization.

450201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411490.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 450201121 is about 21217.9433734752. The cubic root of 450201121 is about 766.4235790338.

Adding to 450201121 its reverse (121102054), we get a palindrome (571303175).

The spelling of 450201121 in words is "four hundred fifty million, two hundred one thousand, one hundred twenty-one".