111100211100973 has 2 divisors, whose sum is σ = 111100211100974. Its totient is φ = 111100211100972.

The previous prime is 111100211100959. The next prime is 111100211101093. The reversal of 111100211100973 is 379001112001111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68439170203209 + 42661040897764 = 8272797^2 + 6531542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111100211100973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111100211100673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550105550486 + 55550105550487.

It is an arithmetic number, because the mean of its divisors is an integer number (55550105550487).

Almost surely, 2^{111100211100973} is an apocalyptic number.

It is an amenable number.

111100211100973 is a deficient number, since it is larger than the sum of its proper divisors (1).

111100211100973 is an equidigital number, since it uses as much as digits as its factorization.

111100211100973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 28.

The spelling of 111100211100973 in words is "one hundred eleven trillion, one hundred billion, two hundred eleven million, one hundred thousand, nine hundred seventy-three".