11111210001097 has 2 divisors, whose sum is σ = 11111210001098. Its totient is φ = 11111210001096.

The previous prime is 11111210000993. The next prime is 11111210001187. The reversal of 11111210001097 is 79010001211111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7425946553481 + 3685263447616 = 2725059^2 + 1919704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111210001097 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111210005097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555605000548 + 5555605000549.

It is an arithmetic number, because the mean of its divisors is an integer number (5555605000549).

Almost surely, 2^{11111210001097} is an apocalyptic number.

It is an amenable number.

11111210001097 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111210001097 is an equidigital number, since it uses as much as digits as its factorization.

11111210001097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 25.

The spelling of 11111210001097 in words is "eleven trillion, one hundred eleven billion, two hundred ten million, one thousand, ninety-seven".