1135124321 has 2 divisors, whose sum is σ = 1135124322. Its totient is φ = 1135124320.

The previous prime is 1135124299. The next prime is 1135124327. The reversal of 1135124321 is 1234215311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1061782225 + 73342096 = 32585^2 + 8564^2 .

It is a cyclic number.

It is not a de Polignac number, because 1135124321 - 2¹⁸ = 1134862177 is a prime.

It is a super-2 number, since 2×1135124321² = 2577014448251422082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1135124327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 567562160 + 567562161.

It is an arithmetic number, because the mean of its divisors is an integer number (567562161).

Almost surely, 2^1135124321 is an apocalyptic number.

It is an amenable number.

1135124321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1135124321 is an equidigital number, since it uses as much as digits as its factorization.

1135124321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 23.

The square root of 1135124321 is about 33691.6060911320. The cubic root of 1135124321 is about 1043.1525154113.

Adding to 1135124321 its reverse (1234215311), we get a palindrome (2369339632).

The spelling of 1135124321 in words is "one billion, one hundred thirty-five million, one hundred twenty-four thousand, three hundred twenty-one".