11204121 has 16 divisors (see below), whose sum is σ = 15638400. Its totient is φ = 7125888.

The previous prime is 11204117. The next prime is 11204161. The reversal of 11204121 is 12140211.

It is a happy number.

It is not a de Polignac number, because 11204121 - 2² = 11204117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11204097 and 11204106.

It is not an unprimeable number, because it can be changed into a prime (11204101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7020 + ... + 8466.

It is an arithmetic number, because the mean of its divisors is an integer number (977400).

Almost surely, 2^11204121 is an apocalyptic number.

It is an amenable number.

11204121 is a deficient number, since it is larger than the sum of its proper divisors (4434279).

11204121 is a wasteful number, since it uses less digits than its factorization.

11204121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 11204121 is about 3347.2557416487. The cubic root of 11204121 is about 223.7652262247.

Adding to 11204121 its reverse (12140211), we get a palindrome (23344332).

It can be divided in two parts, 11204 and 121, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 11204121 in words is "eleven million, two hundred four thousand, one hundred twenty-one".