11111001109997 has 2 divisors, whose sum is σ = 11111001109998. Its totient is φ = 11111001109996.

The previous prime is 11111001109991. The next prime is 11111001110003. The reversal of 11111001109997 is 79990110011111.

It is a balanced prime because it is at equal distance from previous prime (11111001109991) and next prime (11111001110003).

It can be written as a sum of positive squares in only one way, i.e., 9494693171716 + 1616307938281 = 3081346^2 + 1271341^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111001109997 - 2²⁸ = 11110732674541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111001109991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555500554998 + 5555500554999.

It is an arithmetic number, because the mean of its divisors is an integer number (5555500554999).

Almost surely, 2^{11111001109997} is an apocalyptic number.

It is an amenable number.

11111001109997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111001109997 is an equidigital number, since it uses as much as digits as its factorization.

11111001109997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103, while the sum is 41.

The spelling of 11111001109997 in words is "eleven trillion, one hundred eleven billion, one million, one hundred nine thousand, nine hundred ninety-seven".