1130320021 has 16 divisors (see below), whose sum is σ = 1227961728. Its totient is φ = 1036224000.

The previous prime is 1130319991. The next prime is 1130320049. The reversal of 1130320021 is 1200230311.

It is a cyclic number.

It is not a de Polignac number, because 1130320021 - 2⁵ = 1130319989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1130319983 and 1130320010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130320091) 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, 731776 + ... + 733318.

It is an arithmetic number, because the mean of its divisors is an integer number (76747608).

Almost surely, 2^1130320021 is an apocalyptic number.

It is an amenable number.

1130320021 is a deficient number, since it is larger than the sum of its proper divisors (97641707).

1130320021 is a wasteful number, since it uses less digits than its factorization.

1130320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1130320021 is about 33620.2323162705. The cubic root of 1130320021 is about 1041.6787547554.

Adding to 1130320021 its reverse (1200230311), we get a palindrome (2330550332).

The spelling of 1130320021 in words is "one billion, one hundred thirty million, three hundred twenty thousand, twenty-one".