33530213213 has 4 divisors (see below), whose sum is σ = 38320243680. Its totient is φ = 28740182748.

The previous prime is 33530213201. The next prime is 33530213237. The reversal of 33530213213 is 31231203533.

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 not a de Polignac number, because 33530213213 - 2¹⁴ = 33530196829 is a prime.

It is a super-2 number, since 2×33530213213² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33530233213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2395015223 + ... + 2395015236.

It is an arithmetic number, because the mean of its divisors is an integer number (9580060920).

Almost surely, 2^33530213213 is an apocalyptic number.

It is an amenable number.

33530213213 is a deficient number, since it is larger than the sum of its proper divisors (4790030467).

33530213213 is an equidigital number, since it uses as much as digits as its factorization.

33530213213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4790030466.

The product of its (nonzero) digits is 4860, while the sum is 26.

Adding to 33530213213 its reverse (31231203533), we get a palindrome (64761416746).

The spelling of 33530213213 in words is "thirty-three billion, five hundred thirty million, two hundred thirteen thousand, two hundred thirteen".