121131312110113 has 4 divisors (see below), whose sum is σ = 121178026849348. Its totient is φ = 121084597370880.

The previous prime is 121131312110089. The next prime is 121131312110143. The reversal of 121131312110113 is 311011213131121.

It is a happy number.

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 99742426074769 + 21388886035344 = 9987113^2 + 4624812^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121131312110113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121131312110143) 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, 23357365728 + ... + 23357370913.

It is an arithmetic number, because the mean of its divisors is an integer number (30294506712337).

Almost surely, 2^{121131312110113} is an apocalyptic number.

It is an amenable number.

121131312110113 is a deficient number, since it is larger than the sum of its proper divisors (46714739235).

121131312110113 is an equidigital number, since it uses as much as digits as its factorization.

121131312110113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46714739234.

The product of its (nonzero) digits is 108, while the sum is 22.

Adding to 121131312110113 its reverse (311011213131121), we get a palindrome (432142525241234).

The spelling of 121131312110113 in words is "one hundred twenty-one trillion, one hundred thirty-one billion, three hundred twelve million, one hundred ten thousand, one hundred thirteen".