221315116 has 24 divisors (see below), whose sum is σ = 444749760. Its totient is φ = 95302800.

The previous prime is 221315111. The next prime is 221315117. The reversal of 221315116 is 611513122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (221315111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131530 + ... + 133201.

It is an arithmetic number, because the mean of its divisors is an integer number (18531240).

Almost surely, 2^221315116 is an apocalyptic number.

It is an amenable number.

221315116 is an abundant number, since it is smaller than the sum of its proper divisors (223434644).

221315116 is a wasteful number, since it uses less digits than its factorization.

221315116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264765 (or 264763 counting only the distinct ones).

The product of its digits is 360, while the sum is 22.

The square root of 221315116 is about 14876.6634700124. The cubic root of 221315116 is about 604.8815796273.

Adding to 221315116 its reverse (611513122), we get a palindrome (832828238).

The spelling of 221315116 in words is "two hundred twenty-one million, three hundred fifteen thousand, one hundred sixteen".