32221312987 has 2 divisors, whose sum is σ = 32221312988. Its totient is φ = 32221312986.

The previous prime is 32221312961. The next prime is 32221313051. The reversal of 32221312987 is 78921312223.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32221312987 is a prime.

It is not a weakly prime, because it can be changed into another prime (32221312957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16110656493 + 16110656494.

It is an arithmetic number, because the mean of its divisors is an integer number (16110656494).

Almost surely, 2^32221312987 is an apocalyptic number.

32221312987 is a deficient number, since it is larger than the sum of its proper divisors (1).

32221312987 is an equidigital number, since it uses as much as digits as its factorization.

32221312987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The spelling of 32221312987 in words is "thirty-two billion, two hundred twenty-one million, three hundred twelve thousand, nine hundred eighty-seven".