11659121 has 2 divisors, whose sum is σ = 11659122. Its totient is φ = 11659120.

The previous prime is 11659117. The next prime is 11659133. The reversal of 11659121 is 12195611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6574096 + 5085025 = 2564^2 + 2255^2 .

It is a cyclic number.

It is not a de Polignac number, because 11659121 - 2² = 11659117 is a prime.

It is equal to p₇₆₇₁₃₂ and since 11659121 and 767132 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (11659171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5829560 + 5829561.

It is an arithmetic number, because the mean of its divisors is an integer number (5829561).

Almost surely, 2^11659121 is an apocalyptic number.

It is an amenable number.

11659121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11659121 is an equidigital number, since it uses as much as digits as its factorization.

11659121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 26.

The square root of 11659121 is about 3414.5455041630. The cubic root of 11659121 is about 226.7541634044.

The spelling of 11659121 in words is "eleven million, six hundred fifty-nine thousand, one hundred twenty-one".