79802211101 has 2 divisors, whose sum is σ = 79802211102. Its totient is φ = 79802211100.

The previous prime is 79802211089. The next prime is 79802211103. The reversal of 79802211101 is 10111220897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42323187076 + 37479024025 = 205726^2 + 193595^2 .

It is an emirp because it is prime and its reverse (10111220897) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79802211101 - 2¹⁰ = 79802210077 is a prime.

Together with 79802211103, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79802211103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39901105550 + 39901105551.

It is an arithmetic number, because the mean of its divisors is an integer number (39901105551).

Almost surely, 2^79802211101 is an apocalyptic number.

It is an amenable number.

79802211101 is a deficient number, since it is larger than the sum of its proper divisors (1).

79802211101 is an equidigital number, since it uses as much as digits as its factorization.

79802211101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 32.

Adding to 79802211101 its reverse (10111220897), we get a palindrome (89913431998).

The spelling of 79802211101 in words is "seventy-nine billion, eight hundred two million, two hundred eleven thousand, one hundred one".