11201986 has 4 divisors (see below), whose sum is σ = 16802982. Its totient is φ = 5600992.

The previous prime is 11201951. The next prime is 11201987. The reversal of 11201986 is 68910211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68910211 = 4139 ⋅16649.

It can be written as a sum of positive squares in only one way, i.e., 8814961 + 2387025 = 2969^2 + 1545^2 .

It is not an unprimeable number, because it can be changed into a prime (11201987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2800495 + ... + 2800498.

Almost surely, 2^11201986 is an apocalyptic number.

11201986 is a deficient number, since it is larger than the sum of its proper divisors (5600996).

11201986 is an equidigital number, since it uses as much as digits as its factorization.

11201986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5600995.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 11201986 is about 3346.9368084862. The cubic root of 11201986 is about 223.7510121361.

The spelling of 11201986 in words is "eleven million, two hundred one thousand, nine hundred eighty-six".