1204321121 has 8 divisors (see below), whose sum is σ = 1214668224. Its totient is φ = 1193991760.

The previous prime is 1204321087. The next prime is 1204321127. The reversal of 1204321121 is 1211234021.

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 1204321121 - 2¹⁰ = 1204320097 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 1204321121.

It is not an unprimeable number, because it can be changed into a prime (1204321127) 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, 156455 + ... + 163971.

It is an arithmetic number, because the mean of its divisors is an integer number (151833528).

Almost surely, 2^1204321121 is an apocalyptic number.

It is an amenable number.

1204321121 is a deficient number, since it is larger than the sum of its proper divisors (10347103).

1204321121 is a wasteful number, since it uses less digits than its factorization.

1204321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8871.

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

The square root of 1204321121 is about 34703.3301139819. The cubic root of 1204321121 is about 1063.9325623986.

Adding to 1204321121 its reverse (1211234021), we get a palindrome (2415555142).

The spelling of 1204321121 in words is "one billion, two hundred four million, three hundred twenty-one thousand, one hundred twenty-one".