121111112313 has 24 divisors (see below), whose sum is σ = 175160232000. Its totient is φ = 80638385184.

The previous prime is 121111112299. The next prime is 121111112323. The reversal of 121111112313 is 313211111121.

It is not a de Polignac number, because 121111112313 - 2⁵ = 121111112281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121111112323) 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 23 ways as a sum of consecutive naturals, for example, 44871238 + ... + 44873936.

It is an arithmetic number, because the mean of its divisors is an integer number (7298343000).

Almost surely, 2^121111112313 is an apocalyptic number.

It is an amenable number.

121111112313 is a deficient number, since it is larger than the sum of its proper divisors (54049119687).

121111112313 is a wasteful number, since it uses less digits than its factorization.

121111112313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7181 (or 7178 counting only the distinct ones).

The product of its digits is 36, while the sum is 18.

Adding to 121111112313 its reverse (313211111121), we get a palindrome (434322223434).

The spelling of 121111112313 in words is "one hundred twenty-one billion, one hundred eleven million, one hundred twelve thousand, three hundred thirteen".