221354044 has 6 divisors (see below), whose sum is σ = 387369584. Its totient is φ = 110677020.

The previous prime is 221354041. The next prime is 221354053. The reversal of 221354044 is 440453122.

It is a happy number.

It is a super-2 number, since 2×221354044² = 97995225590307872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221354041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27669252 + ... + 27669259.

Almost surely, 2^221354044 is an apocalyptic number.

It is an amenable number.

221354044 is a deficient number, since it is larger than the sum of its proper divisors (166015540).

221354044 is a wasteful number, since it uses less digits than its factorization.

221354044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55338515 (or 55338513 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 221354044 is about 14877.9717703725. The cubic root of 221354044 is about 604.9170425607.

The spelling of 221354044 in words is "two hundred twenty-one million, three hundred fifty-four thousand, forty-four".