521340043222 has 32 divisors (see below), whose sum is σ = 833324308992. Its totient is φ = 243763334784.

The previous prime is 521340043207. The next prime is 521340043267. The reversal of 521340043222 is 222340043125.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14193693 + ... + 14230375.

It is an arithmetic number, because the mean of its divisors is an integer number (26041384656).

Almost surely, 2^521340043222 is an apocalyptic number.

521340043222 is a deficient number, since it is larger than the sum of its proper divisors (311984265770).

521340043222 is a wasteful number, since it uses less digits than its factorization.

521340043222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39372.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 521340043222 its reverse (222340043125), we get a palindrome (743680086347).

The spelling of 521340043222 in words is "five hundred twenty-one billion, three hundred forty million, forty-three thousand, two hundred twenty-two".