1121707321 has 16 divisors (see below), whose sum is σ = 1299997440. Its totient is φ = 948003840.

The previous prime is 1121707319. The next prime is 1121707387. The reversal of 1121707321 is 1237071211.

It is not a de Polignac number, because 1121707321 - 2¹ = 1121707319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121707021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187860 + ... + 193738.

It is an arithmetic number, because the mean of its divisors is an integer number (81249840).

Almost surely, 2^1121707321 is an apocalyptic number.

It is an amenable number.

1121707321 is a deficient number, since it is larger than the sum of its proper divisors (178290119).

1121707321 is an equidigital number, since it uses as much as digits as its factorization.

1121707321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6264.

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 1121707321 is about 33491.8993340181. The cubic root of 1121707321 is about 1039.0262461631.

Adding to 1121707321 its reverse (1237071211), we get a palindrome (2358778532).

The spelling of 1121707321 in words is "one billion, one hundred twenty-one million, seven hundred seven thousand, three hundred twenty-one".