1130221312 has 144 divisors (see below), whose sum is σ = 2585447424. Its totient is φ = 492518400.

The previous prime is 1130221303. The next prime is 1130221373. The reversal of 1130221312 is 2131220311.

It is a hoax number, since the sum of its digits (16) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10562763 + ... + 10562869.

It is an arithmetic number, because the mean of its divisors is an integer number (17954496).

Almost surely, 2^1130221312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1130221312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1292723712).

1130221312 is an abundant number, since it is smaller than the sum of its proper divisors (1455226112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1130221312 is an equidigital number, since it uses as much as digits as its factorization.

1130221312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 151 counting only the distinct ones).

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

The square root of 1130221312 is about 33618.7642842505. The cubic root of 1130221312 is about 1041.6484311716.

Adding to 1130221312 its reverse (2131220311), we get a palindrome (3261441623).

The spelling of 1130221312 in words is "one billion, one hundred thirty million, two hundred twenty-one thousand, three hundred twelve".