221120210044 has 24 divisors (see below), whose sum is σ = 389421527040. Its totient is φ = 109857867696.

The previous prime is 221120210027. The next prime is 221120210057. The reversal of 221120210044 is 440012021122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 817669 + ... + 1053955.

It is an arithmetic number, because the mean of its divisors is an integer number (16225896960).

Almost surely, 2^221120210044 is an apocalyptic number.

It is an amenable number.

221120210044 is a deficient number, since it is larger than the sum of its proper divisors (168301316996).

221120210044 is a wasteful number, since it uses less digits than its factorization.

221120210044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237777 (or 237775 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221120210044 its reverse (440012021122), we get a palindrome (661132231166).

It can be divided in two parts, 221 and 120210044, that added together give a triangular number (120210265 = T₁₅₅₀₅).

The spelling of 221120210044 in words is "two hundred twenty-one billion, one hundred twenty million, two hundred ten thousand, forty-four".