1111225321 has 2 divisors, whose sum is σ = 1111225322. Its totient is φ = 1111225320.

The previous prime is 1111225303. The next prime is 1111225327. The reversal of 1111225321 is 1235221111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1031373225 + 79852096 = 32115^2 + 8936^2 .

It is an emirp because it is prime and its reverse (1235221111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1111225321 - 2⁹ = 1111224809 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111225327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555612660 + 555612661.

It is an arithmetic number, because the mean of its divisors is an integer number (555612661).

Almost surely, 2^1111225321 is an apocalyptic number.

It is an amenable number.

1111225321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111225321 is an equidigital number, since it uses as much as digits as its factorization.

1111225321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 19.

The square root of 1111225321 is about 33335.0464376458. The cubic root of 1111225321 is about 1035.7796551034.

Adding to 1111225321 its reverse (1235221111), we get a palindrome (2346446432).

It can be divided in two parts, 111 and 1225321, that multiplied together give a palindrome (136010631).

The spelling of 1111225321 in words is "one billion, one hundred eleven million, two hundred twenty-five thousand, three hundred twenty-one".