11204305121 has 4 divisors (see below), whose sum is σ = 11590660500. Its totient is φ = 10817949744.

The previous prime is 11204305081. The next prime is 11204305127. The reversal of 11204305121 is 12150340211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5075137600 + 6129167521 = 71240^2 + 78289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11204305121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11204305093 and 11204305102.

It is not an unprimeable number, because it can be changed into a prime (11204305127) 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, 193177646 + ... + 193177703.

It is an arithmetic number, because the mean of its divisors is an integer number (2897665125).

Almost surely, 2^11204305121 is an apocalyptic number.

It is an amenable number.

11204305121 is a deficient number, since it is larger than the sum of its proper divisors (386355379).

11204305121 is an equidigital number, since it uses as much as digits as its factorization.

11204305121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386355378.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 11204305121 its reverse (12150340211), we get a palindrome (23354645332).

The spelling of 11204305121 in words is "eleven billion, two hundred four million, three hundred five thousand, one hundred twenty-one".