121081105871 has 8 divisors (see below), whose sum is σ = 132177325824. Its totient is φ = 109999693720.

The previous prime is 121081105841. The next prime is 121081106009. The reversal of 121081105871 is 178501180121.

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

It is a cyclic number.

It is not a de Polignac number, because 121081105871 - 2¹⁰ = 121081104847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121081105811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3684845 + ... + 3717558.

It is an arithmetic number, because the mean of its divisors is an integer number (16522165728).

Almost surely, 2^121081105871 is an apocalyptic number.

121081105871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121081105871 is a deficient number, since it is larger than the sum of its proper divisors (11096219953).

121081105871 is a wasteful number, since it uses less digits than its factorization.

121081105871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7403901.

The product of its (nonzero) digits is 4480, while the sum is 35.

Adding to 121081105871 its reverse (178501180121), we get a palindrome (299582285992).

The spelling of 121081105871 in words is "one hundred twenty-one billion, eighty-one million, one hundred five thousand, eight hundred seventy-one".