221232214 has 16 divisors (see below), whose sum is σ = 381770496. Its totient is φ = 94185000.

The previous prime is 221232211. The next prime is 221232223. The reversal of 221232214 is 412232122.

It is a super-2 number, since 2×221232214² = 97887385022683592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221232191 and 221232200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221232211) by changing a digit.

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, 50212 + ... + 54439.

It is an arithmetic number, because the mean of its divisors is an integer number (23860656).

Almost surely, 2^221232214 is an apocalyptic number.

221232214 is a deficient number, since it is larger than the sum of its proper divisors (160538282).

221232214 is a wasteful number, since it uses less digits than its factorization.

221232214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104811.

The product of its digits is 384, while the sum is 19.

The square root of 221232214 is about 14873.8768987779. The cubic root of 221232214 is about 604.8060430556.

Adding to 221232214 its reverse (412232122), we get a palindrome (633464336).

The spelling of 221232214 in words is "two hundred twenty-one million, two hundred thirty-two thousand, two hundred fourteen".