32212211221 has 4 divisors (see below), whose sum is σ = 32513260032. Its totient is φ = 31911162412.

The previous prime is 32212211209. The next prime is 32212211231. The reversal of 32212211221 is 12211221223.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 32212211221 - 2¹³ = 32212203029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32212211231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150524245 + ... + 150524458.

It is an arithmetic number, because the mean of its divisors is an integer number (8128315008).

Almost surely, 2^32212211221 is an apocalyptic number.

It is an amenable number.

32212211221 is a deficient number, since it is larger than the sum of its proper divisors (301048811).

32212211221 is a wasteful number, since it uses less digits than its factorization.

32212211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301048810.

The product of its digits is 192, while the sum is 19.

Adding to 32212211221 its reverse (12211221223), we get a palindrome (44423432444).

The spelling of 32212211221 in words is "thirty-two billion, two hundred twelve million, two hundred eleven thousand, two hundred twenty-one".