303012121 has 4 divisors (see below), whose sum is σ = 303054544. Its totient is φ = 302969700.

The previous prime is 303012119. The next prime is 303012139. The reversal of 303012121 is 121210303.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 303012121 - 2¹ = 303012119 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (303012421) 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, 7575 + ... + 25756.

It is an arithmetic number, because the mean of its divisors is an integer number (75763636).

Almost surely, 2^303012121 is an apocalyptic number.

It is an amenable number.

303012121 is a deficient number, since it is larger than the sum of its proper divisors (42423).

303012121 is an equidigital number, since it uses as much as digits as its factorization.

303012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42422.

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

The square root of 303012121 is about 17407.2433486753. The cubic root of 303012121 is about 671.6659522008.

Adding to 303012121 its reverse (121210303), we get a palindrome (424222424).

It can be divided in two parts, 3030 and 12121, that added together give a palindrome (15151).

The spelling of 303012121 in words is "three hundred three million, twelve thousand, one hundred twenty-one".