221713104 has 20 divisors (see below), whose sum is σ = 572758976. Its totient is φ = 73904352.

The previous prime is 221713073. The next prime is 221713111. The reversal of 221713104 is 401317122.

It is a congruent number.

It is an unprimeable number.

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, 2309464 + ... + 2309559.

Almost surely, 2^221713104 is an apocalyptic number.

221713104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

221713104 is an abundant number, since it is smaller than the sum of its proper divisors (351045872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221713104 is a wasteful number, since it uses less digits than its factorization.

221713104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4619034 (or 4619028 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 221713104 is about 14890.0337138638. The cubic root of 221713104 is about 605.2439459741.

The spelling of 221713104 in words is "two hundred twenty-one million, seven hundred thirteen thousand, one hundred four".