80212291 has 2 divisors, whose sum is σ = 80212292. Its totient is φ = 80212290.

The previous prime is 80212261. The next prime is 80212331. The reversal of 80212291 is 19221208.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80212291 - 2⁷ = 80212163 is a prime.

It is not a weakly prime, because it can be changed into another prime (80212241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40106145 + 40106146.

It is an arithmetic number, because the mean of its divisors is an integer number (40106146).

Almost surely, 2^80212291 is an apocalyptic number.

80212291 is a deficient number, since it is larger than the sum of its proper divisors (1).

80212291 is an equidigital number, since it uses as much as digits as its factorization.

80212291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 80212291 is about 8956.1314751404. The cubic root of 80212291 is about 431.2677406130.

Adding to 80212291 its reverse (19221208), we get a palindrome (99433499).

The spelling of 80212291 in words is "eighty million, two hundred twelve thousand, two hundred ninety-one".