It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a Duffinian number.
It is a zygodrome in base 10.
Almost surely, 211999977 is an apocalyptic number.
11999977 is a gapful number since it is divisible by the number (17) formed by its first and last digit.
It is an amenable number.
11999977 is a wasteful number, since it uses less digits than its factorization.
11999977 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 64199.
The square root of 11999977 is about 3464.0982953721. The cubic root of 11999977 is about 228.9427022415.
The spelling of 11999977 in words is "eleven million, nine hundred ninety-nine thousand, nine hundred seventy-seven".