1123121204 has 12 divisors (see below), whose sum is σ = 1967409444. Its totient is φ = 561004224.

The previous prime is 1123121177. The next prime is 1123121221. The reversal of 1123121204 is 4021213211.

It can be written as a sum of positive squares in 2 ways, for example, as 477859600 + 645261604 = 21860^2 + 25402^2 .

It is a super-2 number, since 2×1123121204² = 2522802477748819232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134537 + ... + 142640.

It is an arithmetic number, because the mean of its divisors is an integer number (163950787).

Almost surely, 2^1123121204 is an apocalyptic number.

It is an amenable number.

1123121204 is a deficient number, since it is larger than the sum of its proper divisors (844288240).

1123121204 is a wasteful number, since it uses less digits than its factorization.

1123121204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278194 (or 278192 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1123121204 is about 33513.0005221854. Note that the first 3 decimals coincide. The cubic root of 1123121204 is about 1039.4626180855.

Adding to 1123121204 its reverse (4021213211), we get a palindrome (5144334415).

The spelling of 1123121204 in words is "one billion, one hundred twenty-three million, one hundred twenty-one thousand, two hundred four".