1011200321 has 8 divisors (see below), whose sum is σ = 1017484200. Its totient is φ = 1004935680.

The previous prime is 1011200317. The next prime is 1011200369. The reversal of 1011200321 is 1230021101.

It can be written as a sum of positive squares in 4 ways, for example, as 252969025 + 758231296 = 15905^2 + 27536^2 .

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 1011200321 - 2² = 1011200317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011220321) 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 7 ways as a sum of consecutive naturals, for example, 108785 + ... + 117713.

It is an arithmetic number, because the mean of its divisors is an integer number (127185525).

Almost surely, 2^1011200321 is an apocalyptic number.

It is an amenable number.

1011200321 is a deficient number, since it is larger than the sum of its proper divisors (6283879).

1011200321 is an equidigital number, since it uses as much as digits as its factorization.

1011200321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9619.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1011200321 is about 31799.3761102321. The cubic root of 1011200321 is about 1003.7195878457.

Adding to 1011200321 its reverse (1230021101), we get a palindrome (2241221422).

The spelling of 1011200321 in words is "one billion, eleven million, two hundred thousand, three hundred twenty-one".