11605121 has 8 divisors (see below), whose sum is σ = 12777600. Its totient is φ = 10452240.

The previous prime is 11605109. The next prime is 11605127. The reversal of 11605121 is 12150611.

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 11605121 - 2⁶ = 11605057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11605121.

It is not an unprimeable number, because it can be changed into a prime (11605127) 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, 3641 + ... + 6038.

It is an arithmetic number, because the mean of its divisors is an integer number (1597200).

Almost surely, 2^11605121 is an apocalyptic number.

11605121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11605121 is a deficient number, since it is larger than the sum of its proper divisors (1172479).

11605121 is a wasteful number, since it uses less digits than its factorization.

11605121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9799.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 11605121 is about 3406.6289789174. The cubic root of 11605121 is about 226.4035458434.

Adding to 11605121 its reverse (12150611), we get a palindrome (23755732).

Subtracting 11605121 from its reverse (12150611), we obtain a triangular number (545490 = T₁₀₄₄).

The spelling of 11605121 in words is "eleven million, six hundred five thousand, one hundred twenty-one".