221041244 has 24 divisors (see below), whose sum is σ = 390432000. Its totient is φ = 109494720.

The previous prime is 221041237. The next prime is 221041267. The reversal of 221041244 is 442140122.

221041244 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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, 266222 + ... + 267050.

It is an arithmetic number, because the mean of its divisors is an integer number (16268000).

Almost surely, 2^221041244 is an apocalyptic number.

It is an amenable number.

221041244 is a deficient number, since it is larger than the sum of its proper divisors (169390756).

221041244 is a wasteful number, since it uses less digits than its factorization.

221041244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373 (or 1371 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 221041244 is about 14867.4558684396. The cubic root of 221041244 is about 604.6319679553.

Adding to 221041244 its reverse (442140122), we get a palindrome (663181366).

The spelling of 221041244 in words is "two hundred twenty-one million, forty-one thousand, two hundred forty-four".