33355105221 has 12 divisors (see below), whose sum is σ = 47243448992. Its totient is φ = 20928692928.

The previous prime is 33355105193. The next prime is 33355105237. The reversal of 33355105221 is 12250155333.

It is not a de Polignac number, because 33355105221 - 2⁹ = 33355104709 is a prime.

It is a super-2 number, since 2×33355105221² (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 (33355105291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19235065 + ... + 19236798.

Almost surely, 2^33355105221 is an apocalyptic number.

It is an amenable number.

33355105221 is a deficient number, since it is larger than the sum of its proper divisors (13888343771).

33355105221 is a wasteful number, since it uses less digits than its factorization.

33355105221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38471900 (or 38471883 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The spelling of 33355105221 in words is "thirty-three billion, three hundred fifty-five million, one hundred five thousand, two hundred twenty-one".