221223224112 has 40 divisors (see below), whose sum is σ = 623447269440. Its totient is φ = 67037340480.

The previous prime is 221223224021. The next prime is 221223224129. The reversal of 221223224112 is 211422322122.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209491162 + ... + 209492217.

It is an arithmetic number, because the mean of its divisors is an integer number (15586181736).

Almost surely, 2^221223224112 is an apocalyptic number.

221223224112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221223224112 is an abundant number, since it is smaller than the sum of its proper divisors (402224045328).

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

221223224112 is a wasteful number, since it uses less digits than its factorization.

221223224112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418983401 (or 418983395 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

Adding to 221223224112 its reverse (211422322122), we get a palindrome (432645546234).

The spelling of 221223224112 in words is "two hundred twenty-one billion, two hundred twenty-three million, two hundred twenty-four thousand, one hundred twelve".