11650121 has 12 divisors (see below), whose sum is σ = 13945152. Its totient is φ = 9516144.

The previous prime is 11650073. The next prime is 11650139. The reversal of 11650121 is 12105611.

It is a de Polignac number, because none of the positive numbers 2^k-11650121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11650121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11650921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43175 + ... + 43443.

It is an arithmetic number, because the mean of its divisors is an integer number (1162096).

Almost surely, 2^11650121 is an apocalyptic number.

It is an amenable number.

11650121 is a deficient number, since it is larger than the sum of its proper divisors (2295031).

11650121 is an frugal number, since it uses more digits than its factorization.

11650121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568 (or 299 counting only the distinct ones).

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

The square root of 11650121 is about 3413.2273583809. The cubic root of 11650121 is about 226.6958024350.

Adding to 11650121 its reverse (12105611), we get a palindrome (23755732).

The spelling of 11650121 in words is "eleven million, six hundred fifty thousand, one hundred twenty-one".