33033033221 has 16 divisors (see below), whose sum is σ = 33744000000. Its totient is φ = 32327464176.

The previous prime is 33033033191. The next prime is 33033033263. The reversal of 33033033221 is 12233033033.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33033033221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33039033221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16523780 + ... + 16525778.

It is an arithmetic number, because the mean of its divisors is an integer number (2109000000).

Almost surely, 2^33033033221 is an apocalyptic number.

It is an amenable number.

33033033221 is a deficient number, since it is larger than the sum of its proper divisors (710966779).

33033033221 is a wasteful number, since it uses less digits than its factorization.

33033033221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3176.

The product of its (nonzero) digits is 2916, while the sum is 23.

Adding to 33033033221 its reverse (12233033033), we get a palindrome (45266066254).

The spelling of 33033033221 in words is "thirty-three billion, thirty-three million, thirty-three thousand, two hundred twenty-one".