121131102313 has 4 divisors (see below), whose sum is σ = 130448879428. Its totient is φ = 111813325200.

The previous prime is 121131102299. The next prime is 121131102319. The reversal of 121131102313 is 313201131121.

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 9396006489 + 111735095824 = 96933^2 + 334268^2 .

It is a cyclic number.

It is not a de Polignac number, because 121131102313 - 2¹³ = 121131094121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121131102319) 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, 4658888538 + ... + 4658888563.

It is an arithmetic number, because the mean of its divisors is an integer number (32612219857).

Almost surely, 2^121131102313 is an apocalyptic number.

121131102313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121131102313 is a deficient number, since it is larger than the sum of its proper divisors (9317777115).

121131102313 is an equidigital number, since it uses as much as digits as its factorization.

121131102313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9317777114.

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

Adding to 121131102313 its reverse (313201131121), we get a palindrome (434332233434).

The spelling of 121131102313 in words is "one hundred twenty-one billion, one hundred thirty-one million, one hundred two thousand, three hundred thirteen".