It is a strong prime.
It is a cyclic number.
It is a Sophie Germain prime.
It is a Curzon number.
It is a congruent number.
Almost surely, 211115428362949 is an apocalyptic number.
It is an amenable number.
11115428362949 is an equidigital number, since it uses as much as digits as its factorization.
11115428362949 is an evil number, because the sum of its binary digits is even.
The spelling of 11115428362949 in words is "eleven trillion, one hundred fifteen billion, four hundred twenty-eight million, three hundred sixty-two thousand, nine hundred forty-nine".