1121302231 has 6 divisors (see below), whose sum is σ = 1304372040. Its totient is φ = 961116156.

The previous prime is 1121302213. The next prime is 1121302267. The reversal of 1121302231 is 1322031211.

It is not a de Polignac number, because 1121302231 - 2¹¹ = 1121300183 is a prime.

It is a super-2 number, since 2×1121302231² = 2514637386491154722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121302211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11441811 + ... + 11441908.

It is an arithmetic number, because the mean of its divisors is an integer number (217395340).

Almost surely, 2^1121302231 is an apocalyptic number.

1121302231 is a deficient number, since it is larger than the sum of its proper divisors (183069809).

1121302231 is an equidigital number, since it uses as much as digits as its factorization.

1121302231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22883733 (or 22883726 counting only the distinct ones).

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

The square root of 1121302231 is about 33485.8512061438. The cubic root of 1121302231 is about 1038.9011541682.

Adding to 1121302231 its reverse (1322031211), we get a palindrome (2443333442).

The spelling of 1121302231 in words is "one billion, one hundred twenty-one million, three hundred two thousand, two hundred thirty-one".