11232121 has 8 divisors (see below), whose sum is σ = 11922120. Its totient is φ = 10545408.

The previous prime is 11232083. The next prime is 11232139. The reversal of 11232121 is 12123211.

It can be written as a sum of positive squares in 4 ways, for example, as 3279721 + 7952400 = 1811^2 + 2820^2 .

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 11232121 - 2⁷ = 11231993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11232161) 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, 13135 + ... + 13963.

It is an arithmetic number, because the mean of its divisors is an integer number (1490265).

Almost surely, 2^11232121 is an apocalyptic number.

It is an amenable number.

11232121 is a deficient number, since it is larger than the sum of its proper divisors (689999).

11232121 is an equidigital number, since it uses as much as digits as its factorization.

11232121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643.

The product of its digits is 24, while the sum is 13.

The square root of 11232121 is about 3351.4356625184. The cubic root of 11232121 is about 223.9514735975.

Adding to 11232121 its reverse (12123211), we get a palindrome (23355332).

The spelling of 11232121 in words is "eleven million, two hundred thirty-two thousand, one hundred twenty-one".