33213404321 has 2 divisors, whose sum is σ = 33213404322. Its totient is φ = 33213404320.

The previous prime is 33213404297. The next prime is 33213404401. The reversal of 33213404321 is 12340431233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29734174096 + 3479230225 = 172436^2 + 58985^2 .

It is a cyclic number.

It is not a de Polignac number, because 33213404321 - 2¹⁴ = 33213387937 is a prime.

It is a super-2 number, since 2×33213404321² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33213404221) 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 as a sum of consecutive naturals, namely, 16606702160 + 16606702161.

It is an arithmetic number, because the mean of its divisors is an integer number (16606702161).

Almost surely, 2^33213404321 is an apocalyptic number.

It is an amenable number.

33213404321 is a deficient number, since it is larger than the sum of its proper divisors (1).

33213404321 is an equidigital number, since it uses as much as digits as its factorization.

33213404321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 33213404321 its reverse (12340431233), we get a palindrome (45553835554).

The spelling of 33213404321 in words is "thirty-three billion, two hundred thirteen million, four hundred four thousand, three hundred twenty-one".