111101090978243 has 2 divisors, whose sum is σ = 111101090978244. Its totient is φ = 111101090978242.

The previous prime is 111101090978177. The next prime is 111101090978249. The reversal of 111101090978243 is 342879090101111.

It is a strong prime.

It is an emirp because it is prime and its reverse (342879090101111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111101090978243 is a prime.

It is not a weakly prime, because it can be changed into another prime (111101090978249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550545489121 + 55550545489122.

It is an arithmetic number, because the mean of its divisors is an integer number (55550545489122).

Almost surely, 2^{111101090978243} is an apocalyptic number.

111101090978243 is a deficient number, since it is larger than the sum of its proper divisors (1).

111101090978243 is an equidigital number, since it uses as much as digits as its factorization.

111101090978243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 47.

The spelling of 111101090978243 in words is "one hundred eleven trillion, one hundred one billion, ninety million, nine hundred seventy-eight thousand, two hundred forty-three".