33221044 has 24 divisors (see below), whose sum is σ = 61387200. Its totient is φ = 15687360.

The previous prime is 33221011. The next prime is 33221047. The reversal of 33221044 is 44012233.

It is a super-2 number, since 2×33221044² = 2207275528899872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33221047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39177 + ... + 40015.

It is an arithmetic number, because the mean of its divisors is an integer number (2557800).

Almost surely, 2^33221044 is an apocalyptic number.

It is an amenable number.

33221044 is a deficient number, since it is larger than the sum of its proper divisors (28166156).

33221044 is a wasteful number, since it uses less digits than its factorization.

33221044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383 (or 1381 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 33221044 is about 5763.7699468317. The cubic root of 33221044 is about 321.4680077845.

Adding to 33221044 its reverse (44012233), we get a palindrome (77233277).

The spelling of 33221044 in words is "thirty-three million, two hundred twenty-one thousand, forty-four".