32221312309 has 2 divisors, whose sum is σ = 32221312310. Its totient is φ = 32221312308.

The previous prime is 32221312297. The next prime is 32221312349. The reversal of 32221312309 is 90321312223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16740478225 + 15480834084 = 129385^2 + 124422^2 .

It is a cyclic number.

It is not a de Polignac number, because 32221312309 - 2⁷ = 32221312181 is a prime.

It is a super-2 number, since 2×32221312309² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32221312349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16110656154 + 16110656155.

It is an arithmetic number, because the mean of its divisors is an integer number (16110656155).

Almost surely, 2^32221312309 is an apocalyptic number.

It is an amenable number.

32221312309 is a deficient number, since it is larger than the sum of its proper divisors (1).

32221312309 is an equidigital number, since it uses as much as digits as its factorization.

32221312309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 32221312309 in words is "thirty-two billion, two hundred twenty-one million, three hundred twelve thousand, three hundred nine".