80217116121 has 4 divisors (see below), whose sum is σ = 106956154832. Its totient is φ = 53478077412.

The previous prime is 80217116099. The next prime is 80217116149. The reversal of 80217116121 is 12161171208.

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.

It is not a de Polignac number, because 80217116121 - 2⁹ = 80217115609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80217106121) 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, 13369519351 + ... + 13369519356.

It is an arithmetic number, because the mean of its divisors is an integer number (26739038708).

Almost surely, 2^80217116121 is an apocalyptic number.

It is an amenable number.

80217116121 is a deficient number, since it is larger than the sum of its proper divisors (26739038711).

80217116121 is a wasteful number, since it uses less digits than its factorization.

80217116121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26739038710.

The product of its (nonzero) digits is 1344, while the sum is 30.

Adding to 80217116121 its reverse (12161171208), we get a palindrome (92378287329).

The spelling of 80217116121 in words is "eighty billion, two hundred seventeen million, one hundred sixteen thousand, one hundred twenty-one".