80012321 has 2 divisors, whose sum is σ = 80012322. Its totient is φ = 80012320.

The previous prime is 80012267. The next prime is 80012323. The reversal of 80012321 is 12321008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75342400 + 4669921 = 8680^2 + 2161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80012321 is a prime.

Together with 80012323, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80012321.

It is not a weakly prime, because it can be changed into another prime (80012323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40006160 + 40006161.

It is an arithmetic number, because the mean of its divisors is an integer number (40006161).

Almost surely, 2^80012321 is an apocalyptic number.

It is an amenable number.

80012321 is a deficient number, since it is larger than the sum of its proper divisors (1).

80012321 is an equidigital number, since it uses as much as digits as its factorization.

80012321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 80012321 is about 8944.9606483204. The cubic root of 80012321 is about 430.9090575290.

Adding to 80012321 its reverse (12321008), we get a palindrome (92333329).

The spelling of 80012321 in words is "eighty million, twelve thousand, three hundred twenty-one".