521222 has 8 divisors (see below), whose sum is σ = 842016. Its totient is φ = 240552.

The previous prime is 521201. The next prime is 521231. The reversal of 521222 is 222125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 521197 and 521206.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 521222.

It is an unprimeable number.

521222 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9998 + ... + 10049.

It is an arithmetic number, because the mean of its divisors is an integer number (105252).

2⁵²¹²²² is an apocalyptic number.

521222 is a deficient number, since it is larger than the sum of its proper divisors (320794).

521222 is a wasteful number, since it uses less digits than its factorization.

521222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20062.

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

The square root of 521222 is about 721.9570624352. The cubic root of 521222 is about 80.4774572631.

Adding to 521222 its reverse (222125), we get a palindrome (743347).

The spelling of 521222 in words is "five hundred twenty-one thousand, two hundred twenty-two".