221262316 has 24 divisors (see below), whose sum is σ = 426600720. Its totient is φ = 99576000.

The previous prime is 221262299. The next prime is 221262317. The reversal of 221262316 is 613262122.

It is not an unprimeable number, because it can be changed into a prime (221262317) 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 7 ways as a sum of consecutive naturals, for example, 20451 + ... + 29338.

It is an arithmetic number, because the mean of its divisors is an integer number (17775030).

Almost surely, 2^221262316 is an apocalyptic number.

It is an amenable number.

221262316 is a deficient number, since it is larger than the sum of its proper divisors (205338404).

221262316 is a wasteful number, since it uses less digits than its factorization.

221262316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49905 (or 49903 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 221262316 is about 14874.8887726934. Note that the first 3 decimals coincide. The cubic root of 221262316 is about 604.8334728250.

It can be divided in two parts, 22126 and 2316, that added together give a palindrome (24442).

The spelling of 221262316 in words is "two hundred twenty-one million, two hundred sixty-two thousand, three hundred sixteen".