11182121 has 4 divisors (see below), whose sum is σ = 11190912. Its totient is φ = 11173332.

The previous prime is 11182109. The next prime is 11182147. The reversal of 11182121 is 12128111.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12128111 = 131 ⋅92581.

It is a cyclic number.

It is not a de Polignac number, because 11182121 - 2⁶ = 11182057 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 11182121.

It is not an unprimeable number, because it can be changed into a prime (11182151) 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, 2081 + ... + 5166.

It is an arithmetic number, because the mean of its divisors is an integer number (2797728).

Almost surely, 2^11182121 is an apocalyptic number.

It is an amenable number.

11182121 is a deficient number, since it is larger than the sum of its proper divisors (8791).

11182121 is an equidigital number, since it uses as much as digits as its factorization.

11182121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8790.

The product of its digits is 32, while the sum is 17.

The square root of 11182121 is about 3343.9678527163. The cubic root of 11182121 is about 223.6186712028.

The spelling of 11182121 in words is "eleven million, one hundred eighty-two thousand, one hundred twenty-one".