11601121 has 4 divisors (see below), whose sum is σ = 13258432. Its totient is φ = 9943812.

The previous prime is 11601119. The next prime is 11601127. The reversal of 11601121 is 12110611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12110611 = 257 ⋅47123.

It is a cyclic number.

It is not a de Polignac number, because 11601121 - 2¹ = 11601119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11601127) 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, 828645 + ... + 828658.

It is an arithmetic number, because the mean of its divisors is an integer number (3314608).

Almost surely, 2^11601121 is an apocalyptic number.

It is an amenable number.

11601121 is a deficient number, since it is larger than the sum of its proper divisors (1657311).

11601121 is an equidigital number, since it uses as much as digits as its factorization.

11601121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657310.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 11601121 is about 3406.0418376761. The cubic root of 11601121 is about 226.3775309416.

Adding to 11601121 its reverse (12110611), we get a palindrome (23711732).

The spelling of 11601121 in words is "eleven million, six hundred one thousand, one hundred twenty-one".