1123544011 has 2 divisors, whose sum is σ = 1123544012. Its totient is φ = 1123544010.

The previous prime is 1123544003. The next prime is 1123544027. The reversal of 1123544011 is 1104453211.

It is a weak prime.

It is an emirp because it is prime and its reverse (1104453211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1123544011 - 2³ = 1123544003 is a prime.

It is a super-2 number, since 2×1123544011² = 2524702289307936242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1123544111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561772005 + 561772006.

It is an arithmetic number, because the mean of its divisors is an integer number (561772006).

Almost surely, 2^1123544011 is an apocalyptic number.

1123544011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123544011 is an equidigital number, since it uses as much as digits as its factorization.

1123544011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1123544011 is about 33519.3080328339. The cubic root of 1123544011 is about 1039.5930394301.

Adding to 1123544011 its reverse (1104453211), we get a palindrome (2227997222).

The spelling of 1123544011 in words is "one billion, one hundred twenty-three million, five hundred forty-four thousand, eleven".