802221011 has 2 divisors, whose sum is σ = 802221012. Its totient is φ = 802221010.

The previous prime is 802220971. The next prime is 802221019. The reversal of 802221011 is 110122208.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-802221011 is a prime.

It is not a weakly prime, because it can be changed into another prime (802221019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401110505 + 401110506.

It is an arithmetic number, because the mean of its divisors is an integer number (401110506).

Almost surely, 2^802221011 is an apocalyptic number.

802221011 is a deficient number, since it is larger than the sum of its proper divisors (1).

802221011 is an equidigital number, since it uses as much as digits as its factorization.

802221011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 802221011 is about 28323.5063330796. The cubic root of 802221011 is about 929.1760579191.

Adding to 802221011 its reverse (110122208), we get a palindrome (912343219).

The spelling of 802221011 in words is "eight hundred two million, two hundred twenty-one thousand, eleven".