1321041121 has 2 divisors, whose sum is σ = 1321041122. Its totient is φ = 1321041120.

The previous prime is 1321041109. The next prime is 1321041181. The reversal of 1321041121 is 1211401231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1253160000 + 67881121 = 35400^2 + 8239^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321041121 - 2²⁵ = 1287486689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1321041095 and 1321041104.

It is not a weakly prime, because it can be changed into another prime (1321041181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660520560 + 660520561.

It is an arithmetic number, because the mean of its divisors is an integer number (660520561).

Almost surely, 2^1321041121 is an apocalyptic number.

It is an amenable number.

1321041121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321041121 is an equidigital number, since it uses as much as digits as its factorization.

1321041121 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 1321041121 is about 36346.1293812697. The cubic root of 1321041121 is about 1097.2496360742.

Adding to 1321041121 its reverse (1211401231), we get a palindrome (2532442352).

It can be divided in two parts, 132104 and 1121, that added together give a square (133225 = 365²).

The spelling of 1321041121 in words is "one billion, three hundred twenty-one million, forty-one thousand, one hundred twenty-one".