221436104 has 16 divisors (see below), whose sum is σ = 415422000. Its totient is φ = 110656912.

The previous prime is 221436079. The next prime is 221436107. The reversal of 221436104 is 401634122.

It is a self number, because there is not a number n which added to its sum of digits gives 221436104.

It is not an unprimeable number, because it can be changed into a prime (221436107) 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 in 3 ways as a sum of consecutive naturals, for example, 10199 + ... + 23385.

It is an arithmetic number, because the mean of its divisors is an integer number (25963875).

Almost surely, 2^221436104 is an apocalyptic number.

It is an amenable number.

221436104 is a deficient number, since it is larger than the sum of its proper divisors (193985896).

221436104 is a wasteful number, since it uses less digits than its factorization.

221436104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15292 (or 15288 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 221436104 is about 14880.7292832038. The cubic root of 221436104 is about 604.9917846026.

The spelling of 221436104 in words is "two hundred twenty-one million, four hundred thirty-six thousand, one hundred four".