1321123337 has 2 divisors, whose sum is σ = 1321123338. Its totient is φ = 1321123336.

The previous prime is 1321123303. The next prime is 1321123343. The reversal of 1321123337 is 7333211231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1266007561 + 55115776 = 35581^2 + 7424^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321123337 - 2⁸ = 1321123081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1321122337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660561668 + 660561669.

It is an arithmetic number, because the mean of its divisors is an integer number (660561669).

Almost surely, 2^1321123337 is an apocalyptic number.

It is an amenable number.

1321123337 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321123337 is an equidigital number, since it uses as much as digits as its factorization.

1321123337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 26.

The square root of 1321123337 is about 36347.2603781908. The cubic root of 1321123337 is about 1097.2723983242.

Adding to 1321123337 its reverse (7333211231), we get a palindrome (8654334568).

The spelling of 1321123337 in words is "one billion, three hundred twenty-one million, one hundred twenty-three thousand, three hundred thirty-seven".