221014252 has 12 divisors (see below), whose sum is σ = 399251776. Its totient is φ = 106942320.

The previous prime is 221014243. The next prime is 221014253. The reversal of 221014252 is 252410122.

221014252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (221014253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 891063 + ... + 891310.

Almost surely, 2^221014252 is an apocalyptic number.

It is an amenable number.

221014252 is a deficient number, since it is larger than the sum of its proper divisors (178237524).

221014252 is a wasteful number, since it uses less digits than its factorization.

221014252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782408 (or 1782406 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 221014252 is about 14866.5480862236. The cubic root of 221014252 is about 604.6073558208.

Adding to 221014252 its reverse (252410122), we get a palindrome (473424374).

The spelling of 221014252 in words is "two hundred twenty-one million, fourteen thousand, two hundred fifty-two".