80808121 has 8 divisors (see below), whose sum is σ = 85144320. Its totient is φ = 76480272.

The previous prime is 80808109. The next prime is 80808139. The reversal of 80808121 is 12180808.

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 80808121 - 2¹⁷ = 80677049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80808121.

It is not an unprimeable number, because it can be changed into a prime (80808421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33471 + ... + 35803.

It is an arithmetic number, because the mean of its divisors is an integer number (10643040).

Almost surely, 2^80808121 is an apocalyptic number.

It is an amenable number.

80808121 is a deficient number, since it is larger than the sum of its proper divisors (4336199).

80808121 is a wasteful number, since it uses less digits than its factorization.

80808121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4175.

The product of its (nonzero) digits is 1024, while the sum is 28.

The square root of 80808121 is about 8989.3337350440. Note that the first 3 decimals coincide. The cubic root of 80808121 is about 432.3329498425.

Adding to 80808121 its reverse (12180808), we get a palindrome (92988929).

It can be divided in two parts, 80 and 808121, that added together give a square (808201 = 899²).

The spelling of 80808121 in words is "eighty million, eight hundred eight thousand, one hundred twenty-one".