221153214 has 32 divisors (see below), whose sum is σ = 459005184. Its totient is φ = 70983360.

The previous prime is 221153213. The next prime is 221153227. The reversal of 221153214 is 412351122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221153213) 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 15 ways as a sum of consecutive naturals, for example, 12282 + ... + 24354.

It is an arithmetic number, because the mean of its divisors is an integer number (14343912).

Almost surely, 2^221153214 is an apocalyptic number.

221153214 is an abundant number, since it is smaller than the sum of its proper divisors (237851970).

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

221153214 is a wasteful number, since it uses less digits than its factorization.

221153214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12192.

The product of its digits is 480, while the sum is 21.

The square root of 221153214 is about 14871.2209989631. The cubic root of 221153214 is about 604.7340442496.

The spelling of 221153214 in words is "two hundred twenty-one million, one hundred fifty-three thousand, two hundred fourteen".