33240023321 has 2 divisors, whose sum is σ = 33240023322. Its totient is φ = 33240023320.

The previous prime is 33240023293. The next prime is 33240023363. The reversal of 33240023321 is 12332004233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32666947600 + 573075721 = 180740^2 + 23939^2 .

It is an emirp because it is prime and its reverse (12332004233) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33240023321 is a prime.

It is a super-2 number, since 2×33240023321² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33240023371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16620011660 + 16620011661.

It is an arithmetic number, because the mean of its divisors is an integer number (16620011661).

Almost surely, 2^33240023321 is an apocalyptic number.

It is an amenable number.

33240023321 is a deficient number, since it is larger than the sum of its proper divisors (1).

33240023321 is an equidigital number, since it uses as much as digits as its factorization.

33240023321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 33240023321 its reverse (12332004233), we get a palindrome (45572027554).

The spelling of 33240023321 in words is "thirty-three billion, two hundred forty million, twenty-three thousand, three hundred twenty-one".