32213231221 has 8 divisors (see below), whose sum is σ = 33267967488. Its totient is φ = 31159470000.

The previous prime is 32213231209. The next prime is 32213231231. The reversal of 32213231221 is 12213231223.

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

It is a cyclic number.

It is not a de Polignac number, because 32213231221 - 2⁵ = 32213231189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32213231192 and 32213231201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32213231231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176305 + ... + 309046.

It is an arithmetic number, because the mean of its divisors is an integer number (4158495936).

Almost surely, 2^32213231221 is an apocalyptic number.

32213231221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

32213231221 is a deficient number, since it is larger than the sum of its proper divisors (1054736267).

32213231221 is a wasteful number, since it uses less digits than its factorization.

32213231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487523.

The product of its digits is 864, while the sum is 22.

Adding to 32213231221 its reverse (12213231223), we get a palindrome (44426462444).

It can be divided in two parts, 322132 and 31221, that added together give a palindrome (353353).

The spelling of 32213231221 in words is "thirty-two billion, two hundred thirteen million, two hundred thirty-one thousand, two hundred twenty-one".