221023112 has 8 divisors (see below), whose sum is σ = 414418350. Its totient is φ = 110511552.

The previous prime is 221023111. The next prime is 221023129. The reversal of 221023112 is 211320122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 191711716 + 29311396 = 13846^2 + 5414^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (221023111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13813937 + ... + 13813952.

Almost surely, 2^221023112 is an apocalyptic number.

It is an amenable number.

221023112 is a deficient number, since it is larger than the sum of its proper divisors (193395238).

221023112 is a wasteful number, since it uses less digits than its factorization.

221023112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27627895 (or 27627891 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 221023112 is about 14866.8460676769. The cubic root of 221023112 is about 604.6154348618.

Adding to 221023112 its reverse (211320122), we get a palindrome (432343234).

The spelling of 221023112 in words is "two hundred twenty-one million, twenty-three thousand, one hundred twelve".