11121111097 has 2 divisors, whose sum is σ = 11121111098. Its totient is φ = 11121111096.

The previous prime is 11121111073. The next prime is 11121111101. The reversal of 11121111097 is 79011112111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11115274041 + 5837056 = 105429^2 + 2416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11121111097 is a prime.

It is a super-2 number, since 2×11121111097² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11121111037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560555548 + 5560555549.

It is an arithmetic number, because the mean of its divisors is an integer number (5560555549).

Almost surely, 2^11121111097 is an apocalyptic number.

It is an amenable number.

11121111097 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121111097 is an equidigital number, since it uses as much as digits as its factorization.

11121111097 is an evil number, because the sum of its binary digits is even.

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

The spelling of 11121111097 in words is "eleven billion, one hundred twenty-one million, one hundred eleven thousand, ninety-seven".