1333312121 has 4 divisors (see below), whose sum is σ = 1361680512. Its totient is φ = 1304943732.

The previous prime is 1333312117. The next prime is 1333312133. The reversal of 1333312121 is 1212133331.

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 1333312121 - 2² = 1333312117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1333312093 and 1333312102.

It is not an unprimeable number, because it can be changed into a prime (1333312181) 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, 14184125 + ... + 14184218.

It is an arithmetic number, because the mean of its divisors is an integer number (340420128).

Almost surely, 2^1333312121 is an apocalyptic number.

It is an amenable number.

1333312121 is a deficient number, since it is larger than the sum of its proper divisors (28368391).

1333312121 is an equidigital number, since it uses as much as digits as its factorization.

1333312121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28368390.

The product of its digits is 324, while the sum is 20.

The square root of 1333312121 is about 36514.5467040192. The cubic root of 1333312121 is about 1100.6365794688.

Adding to 1333312121 its reverse (1212133331), we get a palindrome (2545445452).

The spelling of 1333312121 in words is "one billion, three hundred thirty-three million, three hundred twelve thousand, one hundred twenty-one".