11097120161 has 2 divisors, whose sum is σ = 11097120162. Its totient is φ = 11097120160.

The previous prime is 11097120113. The next prime is 11097120187. The reversal of 11097120161 is 16102179011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8485910161 + 2611210000 = 92119^2 + 51100^2 .

It is an emirp because it is prime and its reverse (16102179011) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11097120161 is a prime.

It is not a weakly prime, because it can be changed into another prime (11097120191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5548560080 + 5548560081.

It is an arithmetic number, because the mean of its divisors is an integer number (5548560081).

Almost surely, 2^11097120161 is an apocalyptic number.

It is an amenable number.

11097120161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11097120161 is an equidigital number, since it uses as much as digits as its factorization.

11097120161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 29.

Adding to 11097120161 its reverse (16102179011), we get a palindrome (27199299172).

The spelling of 11097120161 in words is "eleven billion, ninety-seven million, one hundred twenty thousand, one hundred sixty-one".