33221322013 has 4 divisors (see below), whose sum is σ = 36241442208. Its totient is φ = 30201201820.

The previous prime is 33221321963. The next prime is 33221322023. The reversal of 33221322013 is 31022312233.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31022312233 = 11 ⋅2820210203.

It is a cyclic number.

It is not a de Polignac number, because 33221322013 - 2⁹ = 33221321501 is a prime.

It is a super-2 number, since 2×33221322013² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33221322023) 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, 1510060081 + ... + 1510060102.

It is an arithmetic number, because the mean of its divisors is an integer number (9060360552).

Almost surely, 2^33221322013 is an apocalyptic number.

It is an amenable number.

33221322013 is a deficient number, since it is larger than the sum of its proper divisors (3020120195).

33221322013 is a wasteful number, since it uses less digits than its factorization.

33221322013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020120194.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 33221322013 its reverse (31022312233), we get a palindrome (64243634246).

The spelling of 33221322013 in words is "thirty-three billion, two hundred twenty-one million, three hundred twenty-two thousand, thirteen".