121333231313 has 4 divisors (see below), whose sum is σ = 138666550080. Its totient is φ = 103999912548.

The previous prime is 121333231301. The next prime is 121333231337. The reversal of 121333231313 is 313132333121.

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 not a de Polignac number, because 121333231313 - 2⁴ = 121333231297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121333234313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8666659373 + ... + 8666659386.

It is an arithmetic number, because the mean of its divisors is an integer number (34666637520).

Almost surely, 2^121333231313 is an apocalyptic number.

It is an amenable number.

121333231313 is a deficient number, since it is larger than the sum of its proper divisors (17333318767).

121333231313 is an equidigital number, since it uses as much as digits as its factorization.

121333231313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17333318766.

The product of its digits is 2916, while the sum is 26.

Adding to 121333231313 its reverse (313132333121), we get a palindrome (434465564434).

The spelling of 121333231313 in words is "one hundred twenty-one billion, three hundred thirty-three million, two hundred thirty-one thousand, three hundred thirteen".