11216161 has 8 divisors (see below), whose sum is σ = 12285504. Its totient is φ = 10155120.

The previous prime is 11216147. The next prime is 11216171. The reversal of 11216161 is 16161211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11216161 - 2⁹ = 11215649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11216171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 955 + ... + 4831.

It is an arithmetic number, because the mean of its divisors is an integer number (1535688).

Almost surely, 2^11216161 is an apocalyptic number.

11216161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11216161 is a deficient number, since it is larger than the sum of its proper divisors (1069343).

11216161 is a wasteful number, since it uses less digits than its factorization.

11216161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4151.

The product of its digits is 72, while the sum is 19.

The square root of 11216161 is about 3349.0537469560. The cubic root of 11216161 is about 223.8453505783.

Adding to 11216161 its reverse (16161211), we get a palindrome (27377372).

The spelling of 11216161 in words is "eleven million, two hundred sixteen thousand, one hundred sixty-one".