1280332211 has 2 divisors, whose sum is σ = 1280332212. Its totient is φ = 1280332210.

The previous prime is 1280332177. The next prime is 1280332213. The reversal of 1280332211 is 1122330821.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1122330821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1280332211 is a prime.

Together with 1280332213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1280332213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640166105 + 640166106.

It is an arithmetic number, because the mean of its divisors is an integer number (640166106).

Almost surely, 2^1280332211 is an apocalyptic number.

1280332211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1280332211 is an equidigital number, since it uses as much as digits as its factorization.

1280332211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1280332211 is about 35781.7301286564. The cubic root of 1280332211 is about 1085.8609717825.

The spelling of 1280332211 in words is "one billion, two hundred eighty million, three hundred thirty-two thousand, two hundred eleven".