32212202221 has 4 divisors (see below), whose sum is σ = 32212824732. Its totient is φ = 32211579712.

The previous prime is 32212202203. The next prime is 32212202263. The reversal of 32212202221 is 12220221223.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21000357225 + 11211844996 = 144915^2 + 105886^2 .

It is a cyclic number.

It is not a de Polignac number, because 32212202221 - 2⁵ = 32212202189 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 (32212202201) 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, 225820 + ... + 339733.

It is an arithmetic number, because the mean of its divisors is an integer number (8053206183).

Almost surely, 2^32212202221 is an apocalyptic number.

It is an amenable number.

32212202221 is a deficient number, since it is larger than the sum of its proper divisors (622511).

32212202221 is an equidigital number, since it uses as much as digits as its factorization.

32212202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622510.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 32212202221 its reverse (12220221223), we get a palindrome (44432423444).

The spelling of 32212202221 in words is "thirty-two billion, two hundred twelve million, two hundred two thousand, two hundred twenty-one".