121711071705 has 8 divisors (see below), whose sum is σ = 194737714752. Its totient is φ = 64912571568.

The previous prime is 121711071697. The next prime is 121711071829. The reversal of 121711071705 is 507170117121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121711071705 - 2³ = 121711071697 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4057035709 + ... + 4057035738.

It is an arithmetic number, because the mean of its divisors is an integer number (24342214344).

Almost surely, 2^121711071705 is an apocalyptic number.

121711071705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121711071705 is a deficient number, since it is larger than the sum of its proper divisors (73026643047).

121711071705 is an equidigital number, since it uses as much as digits as its factorization.

121711071705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8114071455.

The product of its (nonzero) digits is 3430, while the sum is 33.

Adding to 121711071705 its reverse (507170117121), we get a palindrome (628881188826).

It can be divided in two parts, 1217110 and 71705, that added together give a triangular number (1288815 = T₁₆₀₅).

The spelling of 121711071705 in words is "one hundred twenty-one billion, seven hundred eleven million, seventy-one thousand, seven hundred five".