1321031233001 has 2 divisors, whose sum is σ = 1321031233002. Its totient is φ = 1321031233000.

The previous prime is 1321031232967. The next prime is 1321031233007. The reversal of 1321031233001 is 1003321301231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1320888191401 + 143041600 = 1149299^2 + 11960^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321031233001 - 2¹⁰ = 1321031231977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1321031233007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660515616500 + 660515616501.

It is an arithmetic number, because the mean of its divisors is an integer number (660515616501).

Almost surely, 2^{1321031233001} is an apocalyptic number.

It is an amenable number.

1321031233001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321031233001 is an equidigital number, since it uses as much as digits as its factorization.

1321031233001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1321031233001 its reverse (1003321301231), we get a palindrome (2324352534232).

The spelling of 1321031233001 in words is "one trillion, three hundred twenty-one billion, thirty-one million, two hundred thirty-three thousand, one".