1011204321 has 4 divisors (see below), whose sum is σ = 1348272432. Its totient is φ = 674136212.

The previous prime is 1011204317. The next prime is 1011204347. The reversal of 1011204321 is 1234021101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1011204321 - 2² = 1011204317 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1011204321.

It is not an unprimeable number, because it can be changed into a prime (1011204391) 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 3 ways as a sum of consecutive naturals, for example, 168534051 + ... + 168534056.

It is an arithmetic number, because the mean of its divisors is an integer number (337068108).

Almost surely, 2^1011204321 is an apocalyptic number.

It is an amenable number.

1011204321 is a deficient number, since it is larger than the sum of its proper divisors (337068111).

1011204321 is an equidigital number, since it uses as much as digits as its factorization.

1011204321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337068110.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1011204321 is about 31799.4390044856. The cubic root of 1011204321 is about 1003.7209113134.

Adding to 1011204321 its reverse (1234021101), we get a palindrome (2245225422).

The spelling of 1011204321 in words is "one billion, eleven million, two hundred four thousand, three hundred twenty-one".