221412112 has 20 divisors (see below), whose sum is σ = 438114816. Its totient is φ = 108350240.

The previous prime is 221412101. The next prime is 221412119. The reversal of 221412112 is 211214122.

It is a Harshad number since it is a multiple of its sum of digits (16).

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

It is not an unprimeable number, because it can be changed into a prime (221412119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146464 + ... + 147967.

Almost surely, 2^221412112 is an apocalyptic number.

It is an amenable number.

221412112 is a deficient number, since it is larger than the sum of its proper divisors (216702704).

221412112 is a wasteful number, since it uses less digits than its factorization.

221412112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294486 (or 294480 counting only the distinct ones).

The product of its digits is 64, while the sum is 16.

The square root of 221412112 is about 14879.9231180810. The cubic root of 221412112 is about 604.9699340749.

Adding to 221412112 its reverse (211214122), we get a palindrome (432626234).

The spelling of 221412112 in words is "two hundred twenty-one million, four hundred twelve thousand, one hundred twelve".