1321232312033 has 2 divisors, whose sum is σ = 1321232312034. Its totient is φ = 1321232312032.

The previous prime is 1321232312017. The next prime is 1321232312089. The reversal of 1321232312033 is 3302132321231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1143505145104 + 177727166929 = 1069348^2 + 421577^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321232312033 - 2⁴ = 1321232312017 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1321232311993 and 1321232312011.

It is not a weakly prime, because it can be changed into another prime (1321232312093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660616156016 + 660616156017.

It is an arithmetic number, because the mean of its divisors is an integer number (660616156017).

Almost surely, 2^{1321232312033} is an apocalyptic number.

It is an amenable number.

1321232312033 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321232312033 is an equidigital number, since it uses as much as digits as its factorization.

1321232312033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 1321232312033 its reverse (3302132321231), we get a palindrome (4623364633264).

The spelling of 1321232312033 in words is "one trillion, three hundred twenty-one billion, two hundred thirty-two million, three hundred twelve thousand, thirty-three".