33110042221 has 4 divisors (see below), whose sum is σ = 33128867200. Its totient is φ = 33091217244.

The previous prime is 33110042179. The next prime is 33110042227. The reversal of 33110042221 is 12224001133.

It is a happy number.

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 33110042221 - 2⁷ = 33110042093 is a prime.

It is a super-2 number, since 2×33110042221² (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 (33110042227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9409851 + ... + 9413368.

It is an arithmetic number, because the mean of its divisors is an integer number (8282216800).

Almost surely, 2^33110042221 is an apocalyptic number.

It is an amenable number.

33110042221 is a deficient number, since it is larger than the sum of its proper divisors (18824979).

33110042221 is a wasteful number, since it uses less digits than its factorization.

33110042221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18824978.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 33110042221 its reverse (12224001133), we get a palindrome (45334043354).

It can be divided in two parts, 331100 and 42221, that added together give a square (373321 = 611²).

The spelling of 33110042221 in words is "thirty-three billion, one hundred ten million, forty-two thousand, two hundred twenty-one".