1123121441 has 24 divisors (see below), whose sum is σ = 1274769216. Its totient is φ = 987180480.

The previous prime is 1123121411. The next prime is 1123121443. The reversal of 1123121441 is 1441213211.

It is not a de Polignac number, because 1123121441 - 2¹⁴ = 1123105057 is a prime.

It is a super-2 number, since 2×1123121441² = 2522803542467832962, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1123121443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1099511 + ... + 1100531.

It is an arithmetic number, because the mean of its divisors is an integer number (53115384).

Almost surely, 2^1123121441 is an apocalyptic number.

It is an amenable number.

1123121441 is a deficient number, since it is larger than the sum of its proper divisors (151647775).

1123121441 is a wasteful number, since it uses less digits than its factorization.

1123121441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353 (or 1340 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

The square root of 1123121441 is about 33513.0040581265. The cubic root of 1123121441 is about 1039.4626912009.

Adding to 1123121441 its reverse (1441213211), we get a palindrome (2564334652).

The spelling of 1123121441 in words is "one billion, one hundred twenty-three million, one hundred twenty-one thousand, four hundred forty-one".