350531332221 has 64 divisors (see below), whose sum is σ = 551672985600. Its totient is φ = 193825287936.

The previous prime is 350531332187. The next prime is 350531332241. The reversal of 350531332221 is 122233135053.

It is a happy number.

It is not a de Polignac number, because 350531332221 - 2⁶ = 350531332157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (350531332241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44769535 + ... + 44777363.

It is an arithmetic number, because the mean of its divisors is an integer number (8619890400).

Almost surely, 2^350531332221 is an apocalyptic number.

It is an amenable number.

350531332221 is a deficient number, since it is larger than the sum of its proper divisors (201141653379).

350531332221 is a wasteful number, since it uses less digits than its factorization.

350531332221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8338.

The product of its (nonzero) digits is 16200, while the sum is 30.

Adding to 350531332221 its reverse (122233135053), we get a palindrome (472764467274).

The spelling of 350531332221 in words is "three hundred fifty billion, five hundred thirty-one million, three hundred thirty-two thousand, two hundred twenty-one".