11822117 has 4 divisors (see below), whose sum is σ = 11831820. Its totient is φ = 11812416.

The previous prime is 11822093. The next prime is 11822143. The reversal of 11822117 is 71122811.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4456321 + 7365796 = 2111^2 + 2714^2 .

It is a cyclic number.

It is not a de Polignac number, because 11822117 - 2¹⁴ = 11805733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11822092 and 11822101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11822177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2708 + ... + 5565.

It is an arithmetic number, because the mean of its divisors is an integer number (2957955).

Almost surely, 2^11822117 is an apocalyptic number.

It is an amenable number.

11822117 is a deficient number, since it is larger than the sum of its proper divisors (9703).

11822117 is an equidigital number, since it uses as much as digits as its factorization.

11822117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9702.

The product of its digits is 224, while the sum is 23.

The square root of 11822117 is about 3438.3305542080. The cubic root of 11822117 is about 227.8059611545.

Adding to 11822117 its reverse (71122811), we get a palindrome (82944928).

The spelling of 11822117 in words is "eleven million, eight hundred twenty-two thousand, one hundred seventeen".