221214944 has 12 divisors (see below), whose sum is σ = 435516984. Its totient is φ = 110607456.

The previous prime is 221214923. The next prime is 221214949. The reversal of 221214944 is 449412122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221214949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3456452 + ... + 3456515.

It is an arithmetic number, because the mean of its divisors is an integer number (36293082).

Almost surely, 2^221214944 is an apocalyptic number.

It is an amenable number.

221214944 is a deficient number, since it is larger than the sum of its proper divisors (214302040).

221214944 is an equidigital number, since it uses as much as digits as its factorization.

221214944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6912977 (or 6912969 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 221214944 is about 14873.2963394131. The cubic root of 221214944 is about 604.7903050339.

The spelling of 221214944 in words is "two hundred twenty-one million, two hundred fourteen thousand, nine hundred forty-four".