201121303 has 4 divisors (see below), whose sum is σ = 201218688. Its totient is φ = 201023920.

The previous prime is 201121301. The next prime is 201121309. The reversal of 201121303 is 303121102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303121102 = 2 ⋅151560551.

It is a cyclic number.

It is not a de Polignac number, because 201121303 - 2¹ = 201121301 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 (201121301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45526 + ... + 49747.

It is an arithmetic number, because the mean of its divisors is an integer number (50304672).

Almost surely, 2^201121303 is an apocalyptic number.

201121303 is a deficient number, since it is larger than the sum of its proper divisors (97385).

201121303 is an equidigital number, since it uses as much as digits as its factorization.

201121303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97384.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 201121303 is about 14181.7242604699. The cubic root of 201121303 is about 585.8944148083.

Adding to 201121303 its reverse (303121102), we get a palindrome (504242405).

The spelling of 201121303 in words is "two hundred one million, one hundred twenty-one thousand, three hundred three".