32221849729 has 2 divisors, whose sum is σ = 32221849730. Its totient is φ = 32221849728.

The previous prime is 32221849727. The next prime is 32221849783. The reversal of 32221849729 is 92794812223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22575663504 + 9646186225 = 150252^2 + 98215^2 .

It is a cyclic number.

It is not a de Polignac number, because 32221849729 - 2¹ = 32221849727 is a prime.

Together with 32221849727, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (32221849727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16110924864 + 16110924865.

It is an arithmetic number, because the mean of its divisors is an integer number (16110924865).

Almost surely, 2^32221849729 is an apocalyptic number.

It is an amenable number.

32221849729 is a deficient number, since it is larger than the sum of its proper divisors (1).

32221849729 is an equidigital number, since it uses as much as digits as its factorization.

32221849729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 49.

The spelling of 32221849729 in words is "thirty-two billion, two hundred twenty-one million, eight hundred forty-nine thousand, seven hundred twenty-nine".