522003523221 has 12 divisors (see below), whose sum is σ = 781931203872. Its totient is φ = 348002348652.

The previous prime is 522003523219. The next prime is 522003523231. The reversal of 522003523221 is 122325300225.

It is not a de Polignac number, because 522003523221 - 2¹ = 522003523219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522003523201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1074081081 + ... + 1074081566.

It is an arithmetic number, because the mean of its divisors is an integer number (65160933656).

Almost surely, 2^522003523221 is an apocalyptic number.

It is an amenable number.

522003523221 is a deficient number, since it is larger than the sum of its proper divisors (259927680651).

522003523221 is an equidigital number, since it uses as much as digits as its factorization.

522003523221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148162662 (or 2148162650 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 522003523221 its reverse (122325300225), we get a palindrome (644328823446).

The spelling of 522003523221 in words is "five hundred twenty-two billion, three million, five hundred twenty-three thousand, two hundred twenty-one".