79900022102101 has 2 divisors, whose sum is σ = 79900022102102. Its totient is φ = 79900022102100.

The previous prime is 79900022102093. The next prime is 79900022102107. The reversal of 79900022102101 is 10120122000997.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67035074375025 + 12864947727076 = 8187495^2 + 3586774^2 .

It is an emirp because it is prime and its reverse (10120122000997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79900022102101 - 2³ = 79900022102093 is a prime.

It is a super-2 number, since 2×79900022102101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79900022102107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39950011051050 + 39950011051051.

It is an arithmetic number, because the mean of its divisors is an integer number (39950011051051).

Almost surely, 2^{79900022102101} is an apocalyptic number.

It is an amenable number.

79900022102101 is a deficient number, since it is larger than the sum of its proper divisors (1).

79900022102101 is an equidigital number, since it uses as much as digits as its factorization.

79900022102101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 34.

The spelling of 79900022102101 in words is "seventy-nine trillion, nine hundred billion, twenty-two million, one hundred two thousand, one hundred one".