221102044 has 24 divisors (see below), whose sum is σ = 408708608. Its totient is φ = 104494320.

The previous prime is 221102039. The next prime is 221102071. The reversal of 221102044 is 440201122.

221102044 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221102044² = 97772227721955872, which 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, 15402 + ... + 26065.

Almost surely, 2^221102044 is an apocalyptic number.

It is an amenable number.

221102044 is a deficient number, since it is larger than the sum of its proper divisors (187606564).

221102044 is a wasteful number, since it uses less digits than its factorization.

221102044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41545 (or 41543 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 221102044 is about 14869.5004623558. The cubic root of 221102044 is about 604.6873999234.

Adding to 221102044 its reverse (440201122), we get a palindrome (661303166).

The spelling of 221102044 in words is "two hundred twenty-one million, one hundred two thousand, forty-four".