221314452 has 24 divisors (see below), whose sum is σ = 521416896. Its totient is φ = 73054848.

The previous prime is 221314447. The next prime is 221314453. The reversal of 221314452 is 254413122.

221314452 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221314453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88293 + ... + 90764.

It is an arithmetic number, because the mean of its divisors is an integer number (21725704).

Almost surely, 2^221314452 is an apocalyptic number.

It is an amenable number.

221314452 is an abundant number, since it is smaller than the sum of its proper divisors (300102444).

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

221314452 is a wasteful number, since it uses less digits than its factorization.

221314452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179167 (or 179165 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 221314452 is about 14876.6411531636. The cubic root of 221314452 is about 604.8809746953.

Adding to 221314452 its reverse (254413122), we get a palindrome (475727574).

The spelling of 221314452 in words is "two hundred twenty-one million, three hundred fourteen thousand, four hundred fifty-two".