221202016 has 24 divisors (see below), whose sum is σ = 497705040. Its totient is φ = 94800768.

The previous prime is 221202013. The next prime is 221202029. The reversal of 221202016 is 610202122.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221202013) 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, 493531 + ... + 493978.

It is an arithmetic number, because the mean of its divisors is an integer number (20737710).

Almost surely, 2^221202016 is an apocalyptic number.

It is an amenable number.

221202016 is an abundant number, since it is smaller than the sum of its proper divisors (276503024).

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

221202016 is an equidigital number, since it uses as much as digits as its factorization.

221202016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987526 (or 987518 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 221202016 is about 14872.8617286654. The cubic root of 221202016 is about 604.7785233082.

Adding to 221202016 its reverse (610202122), we get a palindrome (831404138).

The spelling of 221202016 in words is "two hundred twenty-one million, two hundred two thousand, sixteen".