104102112311261 has 2 divisors, whose sum is σ = 104102112311262. Its totient is φ = 104102112311260.

The previous prime is 104102112311191. The next prime is 104102112311299. The reversal of 104102112311261 is 162113211201401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54719588658361 + 49382523652900 = 7397269^2 + 7027270^2 .

It is an emirp because it is prime and its reverse (162113211201401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104102112311261 - 2²² = 104102108116957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 104102112311261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104102112611261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52051056155630 + 52051056155631.

It is an arithmetic number, because the mean of its divisors is an integer number (52051056155631).

Almost surely, 2^{104102112311261} is an apocalyptic number.

It is an amenable number.

104102112311261 is a deficient number, since it is larger than the sum of its proper divisors (1).

104102112311261 is an equidigital number, since it uses as much as digits as its factorization.

104102112311261 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 26.

Adding to 104102112311261 its reverse (162113211201401), we get a palindrome (266215323512662).

The spelling of 104102112311261 in words is "one hundred four trillion, one hundred two billion, one hundred twelve million, three hundred eleven thousand, two hundred sixty-one".