20301121 has 2 divisors, whose sum is σ = 20301122. Its totient is φ = 20301120.

The previous prime is 20301119. The next prime is 20301137. The reversal of 20301121 is 12110302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13727025 + 6574096 = 3705^2 + 2564^2 .

It is a cyclic number.

It is not a de Polignac number, because 20301121 - 2¹ = 20301119 is a prime.

Together with 20301119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 20301098 and 20301107.

It is not a weakly prime, because it can be changed into another prime (20301181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10150560 + 10150561.

It is an arithmetic number, because the mean of its divisors is an integer number (10150561).

Almost surely, 2^20301121 is an apocalyptic number.

It is an amenable number.

20301121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20301121 is an equidigital number, since it uses as much as digits as its factorization.

20301121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 20301121 is about 4505.6765307776. The cubic root of 20301121 is about 272.7972616705.

Adding to 20301121 its reverse (12110302), we get a palindrome (32411423).

The spelling of 20301121 in words is "twenty million, three hundred one thousand, one hundred twenty-one".