80082220021 has 2 divisors, whose sum is σ = 80082220022. Its totient is φ = 80082220020.

The previous prime is 80082220013. The next prime is 80082220063. The reversal of 80082220021 is 12002228008.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65580039396 + 14502180625 = 256086^2 + 120425^2 .

It is a cyclic number.

It is not a de Polignac number, because 80082220021 - 2³ = 80082220013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80082220721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40041110010 + 40041110011.

It is an arithmetic number, because the mean of its divisors is an integer number (40041110011).

Almost surely, 2^80082220021 is an apocalyptic number.

It is an amenable number.

80082220021 is a deficient number, since it is larger than the sum of its proper divisors (1).

80082220021 is an equidigital number, since it uses as much as digits as its factorization.

80082220021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 80082220021 its reverse (12002228008), we get a palindrome (92084448029).

The spelling of 80082220021 in words is "eighty billion, eighty-two million, two hundred twenty thousand, twenty-one".