33221201213 has 4 divisors (see below), whose sum is σ = 33784272480. Its totient is φ = 32658129948.

The previous prime is 33221201207. The next prime is 33221201239. The reversal of 33221201213 is 31210212233.

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 33221201213 - 2⁴ = 33221201197 is a prime.

It is a super-2 number, since 2×33221201213² (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 (33221200213) 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, 281535545 + ... + 281535662.

It is an arithmetic number, because the mean of its divisors is an integer number (8446068120).

Almost surely, 2^33221201213 is an apocalyptic number.

It is an amenable number.

33221201213 is a deficient number, since it is larger than the sum of its proper divisors (563071267).

33221201213 is an equidigital number, since it uses as much as digits as its factorization.

33221201213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563071266.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 33221201213 its reverse (31210212233), we get a palindrome (64431413446).

The spelling of 33221201213 in words is "thirty-three billion, two hundred twenty-one million, two hundred one thousand, two hundred thirteen".