32211312221 has 8 divisors (see below), whose sum is σ = 35150622624. Its totient is φ = 29273836720.

The previous prime is 32211312209. The next prime is 32211312223. The reversal of 32211312221 is 12221311223.

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 32211312221 - 2⁶ = 32211312157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32211312193 and 32211312202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32211312223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421886 + ... + 492351.

It is an arithmetic number, because the mean of its divisors is an integer number (4393827828).

Almost surely, 2^32211312221 is an apocalyptic number.

It is an amenable number.

32211312221 is a deficient number, since it is larger than the sum of its proper divisors (2939310403).

32211312221 is a wasteful number, since it uses less digits than its factorization.

32211312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917451.

The product of its digits is 288, while the sum is 20.

Adding to 32211312221 its reverse (12221311223), we get a palindrome (44432623444).

The spelling of 32211312221 in words is "thirty-two billion, two hundred eleven million, three hundred twelve thousand, two hundred twenty-one".