33103233221 has 4 divisors (see below), whose sum is σ = 35050482252. Its totient is φ = 31155984192.

The previous prime is 33103233181. The next prime is 33103233239. The reversal of 33103233221 is 12233230133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26430630625 + 6672602596 = 162575^2 + 81686^2 .

It is a cyclic number.

It is not a de Polignac number, because 33103233221 - 2¹⁴ = 33103216837 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 (33103233521) 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 3 ways as a sum of consecutive naturals, for example, 973624490 + ... + 973624523.

It is an arithmetic number, because the mean of its divisors is an integer number (8762620563).

Almost surely, 2^33103233221 is an apocalyptic number.

It is an amenable number.

33103233221 is a deficient number, since it is larger than the sum of its proper divisors (1947249031).

33103233221 is a wasteful number, since it uses less digits than its factorization.

33103233221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947249030.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 33103233221 its reverse (12233230133), we get a palindrome (45336463354).

The spelling of 33103233221 in words is "thirty-three billion, one hundred three million, two hundred thirty-three thousand, two hundred twenty-one".