1321425035533 has 4 divisors (see below), whose sum is σ = 1321539090880. Its totient is φ = 1321310980188.

The previous prime is 1321425035527. The next prime is 1321425035543. The reversal of 1321425035533 is 3355305241231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321425035533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321425035492 and 1321425035501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321425035543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57010293 + ... + 57033466.

It is an arithmetic number, because the mean of its divisors is an integer number (330384772720).

Almost surely, 2^{1321425035533} is an apocalyptic number.

It is an amenable number.

1321425035533 is a deficient number, since it is larger than the sum of its proper divisors (114055347).

1321425035533 is a wasteful number, since it uses less digits than its factorization.

1321425035533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114055346.

The product of its (nonzero) digits is 162000, while the sum is 37.

The spelling of 1321425035533 in words is "one trillion, three hundred twenty-one billion, four hundred twenty-five million, thirty-five thousand, five hundred thirty-three".