1123221275 has 54 divisors (see below), whose sum is σ = 1589370372. Its totient is φ = 780914400.

The previous prime is 1123221269. The next prime is 1123221343. The reversal of 1123221275 is 5721223211.

It is not a de Polignac number, because 1123221275 - 2¹⁶ = 1123155739 is a prime.

It is a super-2 number, since 2×1123221275² = 2523252065225251250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 23898302 + ... + 23898348.

Almost surely, 2^1123221275 is an apocalyptic number.

1123221275 is a deficient number, since it is larger than the sum of its proper divisors (466149097).

1123221275 is an equidigital number, since it uses as much as digits as its factorization.

1123221275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 106 counting only the distinct ones).

The product of its digits is 1680, while the sum is 26.

The square root of 1123221275 is about 33514.4935065413. The cubic root of 1123221275 is about 1039.4934894862.

Adding to 1123221275 its reverse (5721223211), we get a palindrome (6844444486).

The spelling of 1123221275 in words is "one billion, one hundred twenty-three million, two hundred twenty-one thousand, two hundred seventy-five".