521214222 has 48 divisors (see below), whose sum is σ = 1103602176. Its totient is φ = 163934400.

The previous prime is 521214217. The next prime is 521214241. The reversal of 521214222 is 222412125.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 311833 + ... + 313499.

It is an arithmetic number, because the mean of its divisors is an integer number (22991712).

Almost surely, 2^521214222 is an apocalyptic number.

521214222 is an abundant number, since it is smaller than the sum of its proper divisors (582387954).

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

521214222 is a wasteful number, since it uses less digits than its factorization.

521214222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785 (or 1744 counting only the distinct ones).

The product of its digits is 640, while the sum is 21.

The square root of 521214222 is about 22830.1165568641. The cubic root of 521214222 is about 804.7705694947.

Adding to 521214222 its reverse (222412125), we get a palindrome (743626347).

The spelling of 521214222 in words is "five hundred twenty-one million, two hundred fourteen thousand, two hundred twenty-two".