1111042321 has 2 divisors, whose sum is σ = 1111042322. Its totient is φ = 1111042320.

The previous prime is 1111042267. The next prime is 1111042337. The reversal of 1111042321 is 1232401111.

It is an a-pointer prime, because the next prime (1111042337) can be obtained adding 1111042321 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1094881921 + 16160400 = 33089^2 + 4020^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111042321 - 2²⁵ = 1077487889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111042295 and 1111042304.

It is not a weakly prime, because it can be changed into another prime (1111042351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555521160 + 555521161.

It is an arithmetic number, because the mean of its divisors is an integer number (555521161).

Almost surely, 2^1111042321 is an apocalyptic number.

It is an amenable number.

1111042321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111042321 is an equidigital number, since it uses as much as digits as its factorization.

1111042321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1111042321 is about 33332.3014656954. The cubic root of 1111042321 is about 1035.7227935232.

Adding to 1111042321 its reverse (1232401111), we get a palindrome (2343443432).

The spelling of 1111042321 in words is "one billion, one hundred eleven million, forty-two thousand, three hundred twenty-one".