121713580011 has 4 divisors (see below), whose sum is σ = 162284773352. Its totient is φ = 81142386672.

The previous prime is 121713579997. The next prime is 121713580019. The reversal of 121713580011 is 110085317121.

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

It is not a de Polignac number, because 121713580011 - 2²⁹ = 121176709099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121713580019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20285596666 + ... + 20285596671.

It is an arithmetic number, because the mean of its divisors is an integer number (40571193338).

Almost surely, 2^121713580011 is an apocalyptic number.

121713580011 is a deficient number, since it is larger than the sum of its proper divisors (40571193341).

121713580011 is an equidigital number, since it uses as much as digits as its factorization.

121713580011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40571193340.

The product of its (nonzero) digits is 1680, while the sum is 30.

Adding to 121713580011 its reverse (110085317121), we get a palindrome (231798897132).

The spelling of 121713580011 in words is "one hundred twenty-one billion, seven hundred thirteen million, five hundred eighty thousand, eleven".