1120871321 has 4 divisors (see below), whose sum is σ = 1139869200. Its totient is φ = 1101873444.

The previous prime is 1120871317. The next prime is 1120871357. The reversal of 1120871321 is 1231780211.

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 1120871321 - 2² = 1120871317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1120871221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9498851 + ... + 9498968.

It is an arithmetic number, because the mean of its divisors is an integer number (284967300).

Almost surely, 2^1120871321 is an apocalyptic number.

It is an amenable number.

1120871321 is a deficient number, since it is larger than the sum of its proper divisors (18997879).

1120871321 is an equidigital number, since it uses as much as digits as its factorization.

1120871321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18997878.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 1120871321 is about 33479.4163778283. The cubic root of 1120871321 is about 1038.7680558704.

The spelling of 1120871321 in words is "one billion, one hundred twenty million, eight hundred seventy-one thousand, three hundred twenty-one".