33213221044 has 24 divisors (see below), whose sum is σ = 59234276808. Its totient is φ = 16289295360.

The previous prime is 33213221009. The next prime is 33213221089. The reversal of 33213221044 is 44012231233.

It can be written as a sum of positive squares in 4 ways, for example, as 6660518544 + 26552702500 = 81612^2 + 162950^2 .

It is a super-2 number, since 2×33213221044² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 970464 + ... + 1004104.

It is an arithmetic number, because the mean of its divisors is an integer number (2468094867).

Almost surely, 2^33213221044 is an apocalyptic number.

It is an amenable number.

33213221044 is a deficient number, since it is larger than the sum of its proper divisors (26021055764).

33213221044 is a wasteful number, since it uses less digits than its factorization.

33213221044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38355 (or 38353 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 33213221044 its reverse (44012231233), we get a palindrome (77225452277).

The spelling of 33213221044 in words is "thirty-three billion, two hundred thirteen million, two hundred twenty-one thousand, forty-four".