1130221321 has 16 divisors (see below), whose sum is σ = 1187596800. Its totient is φ = 1074161088.

The previous prime is 1130221303. The next prime is 1130221373. The reversal of 1130221321 is 1231220311.

It is a cyclic number.

It is not a de Polignac number, because 1130221321 - 2¹¹ = 1130219273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1130221295 and 1130221304.

It is not an unprimeable number, because it can be changed into a prime (1130221121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1115211 + ... + 1116223.

It is an arithmetic number, because the mean of its divisors is an integer number (74224800).

Almost surely, 2^1130221321 is an apocalyptic number.

It is an amenable number.

1130221321 is a deficient number, since it is larger than the sum of its proper divisors (57375479).

1130221321 is a wasteful number, since it uses less digits than its factorization.

1130221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1130221321 is about 33618.7644181044. The cubic root of 1130221321 is about 1041.6484339365.

Adding to 1130221321 its reverse (1231220311), we get a palindrome (2361441632).

It can be divided in two parts, 11302 and 21321, that added together give a palindrome (32623).

The spelling of 1130221321 in words is "one billion, one hundred thirty million, two hundred twenty-one thousand, three hundred twenty-one".