421320332033 has 4 divisors (see below), whose sum is σ = 422841344340. Its totient is φ = 419799319728.

The previous prime is 421320332011. The next prime is 421320332053. The reversal of 421320332033 is 330233023124.

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 98023469569 + 323296862464 = 313087^2 + 568592^2 .

It is a cyclic number.

It is not a de Polignac number, because 421320332033 - 2⁸ = 421320331777 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421320331993 and 421320332011.

It is not an unprimeable number, because it can be changed into a prime (421320332003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760505738 + ... + 760506291.

It is an arithmetic number, because the mean of its divisors is an integer number (105710336085).

Almost surely, 2^421320332033 is an apocalyptic number.

It is an amenable number.

421320332033 is a deficient number, since it is larger than the sum of its proper divisors (1521012307).

421320332033 is a wasteful number, since it uses less digits than its factorization.

421320332033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521012306.

The product of its (nonzero) digits is 7776, while the sum is 26.

Adding to 421320332033 its reverse (330233023124), we get a palindrome (751553355157).

The spelling of 421320332033 in words is "four hundred twenty-one billion, three hundred twenty million, three hundred thirty-two thousand, thirty-three".