20111122120097 has 2 divisors, whose sum is σ = 20111122120098. Its totient is φ = 20111122120096.

The previous prime is 20111122120093. The next prime is 20111122120123. The reversal of 20111122120097 is 79002122111102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10125117636001 + 9986004484096 = 3181999^2 + 3160064^2 .

It is a cyclic number.

It is not a de Polignac number, because 20111122120097 - 2² = 20111122120093 is a prime.

It is not a weakly prime, because it can be changed into another prime (20111122120093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055561060048 + 10055561060049.

It is an arithmetic number, because the mean of its divisors is an integer number (10055561060049).

Almost surely, 2^{20111122120097} is an apocalyptic number.

It is an amenable number.

20111122120097 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111122120097 is an equidigital number, since it uses as much as digits as its factorization.

20111122120097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 29.

Adding to 20111122120097 its reverse (79002122111102), we get a palindrome (99113244231199).

The spelling of 20111122120097 in words is "twenty trillion, one hundred eleven billion, one hundred twenty-two million, one hundred twenty thousand, ninety-seven".