221310112 has 48 divisors (see below), whose sum is σ = 446735520. Its totient is φ = 107889408.

The previous prime is 221310109. The next prime is 221310127. The reversal of 221310112 is 211013122.

It is a junction number, because it is equal to n+sod(n) for n = 221310092 and 221310101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233223 + ... + 234169.

It is an arithmetic number, because the mean of its divisors is an integer number (9306990).

Almost surely, 2^221310112 is an apocalyptic number.

It is an amenable number.

221310112 is an abundant number, since it is smaller than the sum of its proper divisors (225425408).

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

221310112 is a wasteful number, since it uses less digits than its factorization.

221310112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133 (or 1125 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 221310112 is about 14876.4952861889. The cubic root of 221310112 is about 604.8770207427.

Adding to 221310112 its reverse (211013122), we get a palindrome (432323234).

The spelling of 221310112 in words is "two hundred twenty-one million, three hundred ten thousand, one hundred twelve".