221843950 has 12 divisors (see below), whose sum is σ = 412629840. Its totient is φ = 88737560.

The previous prime is 221843933. The next prime is 221843959. The reversal of 221843950 is 59348122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221843959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2218390 + ... + 2218489.

It is an arithmetic number, because the mean of its divisors is an integer number (34385820).

Almost surely, 2^221843950 is an apocalyptic number.

221843950 is a deficient number, since it is larger than the sum of its proper divisors (190785890).

221843950 is a wasteful number, since it uses less digits than its factorization.

221843950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4436891 (or 4436886 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 221843950 is about 14894.4268100521. The cubic root of 221843950 is about 605.3629859617.

The spelling of 221843950 in words is "two hundred twenty-one million, eight hundred forty-three thousand, nine hundred fifty".