221040112 has 20 divisors (see below), whose sum is σ = 428644440. Its totient is φ = 110422208.

The previous prime is 221040101. The next prime is 221040121. The reversal of 221040112 is 211040122.

It is a happy number.

It is a super-2 number, since 2×221040112² = 97717462225945088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221040092 and 221040101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14658 + ... + 25630.

It is an arithmetic number, because the mean of its divisors is an integer number (21432222).

Almost surely, 2^221040112 is an apocalyptic number.

It is an amenable number.

221040112 is a deficient number, since it is larger than the sum of its proper divisors (207604328).

221040112 is a wasteful number, since it uses less digits than its factorization.

221040112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12240 (or 12234 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 221040112 is about 14867.4177986630. The cubic root of 221040112 is about 604.6309358032.

Adding to 221040112 its reverse (211040122), we get a palindrome (432080234).

The spelling of 221040112 in words is "two hundred twenty-one million, forty thousand, one hundred twelve".