1100144321 has 2 divisors, whose sum is σ = 1100144322. Its totient is φ = 1100144320.

The previous prime is 1100144291. The next prime is 1100144329. The reversal of 1100144321 is 1234410011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 967894321 + 132250000 = 31111^2 + 11500^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100144321 - 2¹⁸ = 1099882177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1100144321.

It is not a weakly prime, because it can be changed into another prime (1100144329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550072160 + 550072161.

It is an arithmetic number, because the mean of its divisors is an integer number (550072161).

Almost surely, 2^1100144321 is an apocalyptic number.

It is an amenable number.

1100144321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100144321 is an equidigital number, since it uses as much as digits as its factorization.

1100144321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1100144321 is about 33168.4235531326. The cubic root of 1100144321 is about 1032.3252588453.

Adding to 1100144321 its reverse (1234410011), we get a palindrome (2334554332).

The spelling of 1100144321 in words is "one billion, one hundred million, one hundred forty-four thousand, three hundred twenty-one".