1123020133 has 4 divisors (see below), whose sum is σ = 1133323180. Its totient is φ = 1112717088.

The previous prime is 1123020113. The next prime is 1123020139. The reversal of 1123020133 is 3310203211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 666001249 + 457018884 = 25807^2 + 21378^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123020133 - 2¹³ = 1123011941 is a prime.

It is a super-2 number, since 2×1123020133² = 2522348438246675378, 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 (1123020139) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5151360 + ... + 5151577.

It is an arithmetic number, because the mean of its divisors is an integer number (283330795).

Almost surely, 2^1123020133 is an apocalyptic number.

It is an amenable number.

1123020133 is a deficient number, since it is larger than the sum of its proper divisors (10303047).

1123020133 is a wasteful number, since it uses less digits than its factorization.

1123020133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10303046.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1123020133 is about 33511.4925510637. The cubic root of 1123020133 is about 1039.4314363283.

Adding to 1123020133 its reverse (3310203211), we get a palindrome (4433223344).

The spelling of 1123020133 in words is "one billion, one hundred twenty-three million, twenty thousand, one hundred thirty-three".