121112313013 has 4 divisors (see below), whose sum is σ = 122771385868. Its totient is φ = 119453240160.

The previous prime is 121112313011. The next prime is 121112313041. The reversal of 121112313013 is 310313211121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90620867089 + 30491445924 = 301033^2 + 174618^2 .

It is a cyclic number.

It is not a de Polignac number, because 121112313013 - 2¹ = 121112313011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112313011) 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, 829536318 + ... + 829536463.

It is an arithmetic number, because the mean of its divisors is an integer number (30692846467).

Almost surely, 2^121112313013 is an apocalyptic number.

It is an amenable number.

121112313013 is a deficient number, since it is larger than the sum of its proper divisors (1659072855).

121112313013 is an equidigital number, since it uses as much as digits as its factorization.

121112313013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659072854.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 121112313013 its reverse (310313211121), we get a palindrome (431425524134).

The spelling of 121112313013 in words is "one hundred twenty-one billion, one hundred twelve million, three hundred thirteen thousand, thirteen".