1321040002033 has 4 divisors (see below), whose sum is σ = 1321388289508. Its totient is φ = 1320691714560.

The previous prime is 1321040001977. The next prime is 1321040002069. The reversal of 1321040002033 is 3302000401231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 576395268849 + 744644733184 = 759207^2 + 862928^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321040002033 - 2¹³ = 1321039993841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1321040002033.

It is not an unprimeable number, because it can be changed into a prime (1321040002133) 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 in 3 ways as a sum of consecutive naturals, for example, 174138048 + ... + 174145633.

It is an arithmetic number, because the mean of its divisors is an integer number (330347072377).

Almost surely, 2^{1321040002033} is an apocalyptic number.

It is an amenable number.

1321040002033 is a deficient number, since it is larger than the sum of its proper divisors (348287475).

1321040002033 is an equidigital number, since it uses as much as digits as its factorization.

1321040002033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348287474.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 1321040002033 its reverse (3302000401231), we get a palindrome (4623040403264).

The spelling of 1321040002033 in words is "one trillion, three hundred twenty-one billion, forty million, two thousand, thirty-three".