1321141121 has 2 divisors, whose sum is σ = 1321141122. Its totient is φ = 1321141120.

The previous prime is 1321141109. The next prime is 1321141169. The reversal of 1321141121 is 1211411231.

It is a m-pointer prime, because the next prime (1321141169) can be obtained adding 1321141121 to its product of digits (48).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 874030096 + 447111025 = 29564^2 + 21145^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321141121 - 2²² = 1316946817 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1321141121.

It is not a weakly prime, because it can be changed into another prime (1321041121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660570560 + 660570561.

It is an arithmetic number, because the mean of its divisors is an integer number (660570561).

Almost surely, 2^1321141121 is an apocalyptic number.

It is an amenable number.

1321141121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321141121 is an equidigital number, since it uses as much as digits as its factorization.

1321141121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48, while the sum is 17.

The square root of 1321141121 is about 36347.5050175387. The cubic root of 1321141121 is about 1097.2773218627.

Adding to 1321141121 its reverse (1211411231), we get a palindrome (2532552352).

The spelling of 1321141121 in words is "one billion, three hundred twenty-one million, one hundred forty-one thousand, one hundred twenty-one".