221252 has 6 divisors (see below), whose sum is σ = 387198. Its totient is φ = 110624.

The previous prime is 221251. The next prime is 221261. The reversal of 221252 is 252122.

It can be written as a sum of positive squares in only one way, i.e., 217156 + 4096 = 466^2 + 64^2 .

It is not an unprimeable number, because it can be changed into a prime (221251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27653 + ... + 27660.

It is an arithmetic number, because the mean of its divisors is an integer number (64533).

2²²¹²⁵² is an apocalyptic number.

It is an amenable number.

221252 is a deficient number, since it is larger than the sum of its proper divisors (165946).

221252 is a wasteful number, since it uses less digits than its factorization.

221252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55317 (or 55315 counting only the distinct ones).

The product of its digits is 80, while the sum is 14.

The square root of 221252 is about 470.3743190269. The cubic root of 221252 is about 60.4824072883.

Adding to 221252 its reverse (252122), we get a palindrome (473374).

The spelling of 221252 in words is "two hundred twenty-one thousand, two hundred fifty-two".