121316910601 has 4 divisors (see below), whose sum is σ = 126591558912. Its totient is φ = 116042262292.

The previous prime is 121316910581. The next prime is 121316910607. The reversal of 121316910601 is 106019613121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 106019613121 = 4283 ⋅24753587.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121316910601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121316910607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2637324121 + ... + 2637324166.

It is an arithmetic number, because the mean of its divisors is an integer number (31647889728).

Almost surely, 2^121316910601 is an apocalyptic number.

It is an amenable number.

121316910601 is a deficient number, since it is larger than the sum of its proper divisors (5274648311).

121316910601 is an equidigital number, since it uses as much as digits as its factorization.

121316910601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5274648310.

The product of its (nonzero) digits is 1944, while the sum is 31.

The spelling of 121316910601 in words is "one hundred twenty-one billion, three hundred sixteen million, nine hundred ten thousand, six hundred one".