321224231228987 has 2 divisors, whose sum is σ = 321224231228988. Its totient is φ = 321224231228986.

The previous prime is 321224231228941. The next prime is 321224231229001. The reversal of 321224231228987 is 789822132422123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 321224231228987 - 2¹² = 321224231224891 is a prime.

It is not a weakly prime, because it can be changed into another prime (321224231228687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160612115614493 + 160612115614494.

It is an arithmetic number, because the mean of its divisors is an integer number (160612115614494).

Almost surely, 2^{321224231228987} is an apocalyptic number.

321224231228987 is a deficient number, since it is larger than the sum of its proper divisors (1).

321224231228987 is an equidigital number, since it uses as much as digits as its factorization.

321224231228987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9289728, while the sum is 56.

The spelling of 321224231228987 in words is "three hundred twenty-one trillion, two hundred twenty-four billion, two hundred thirty-one million, two hundred twenty-eight thousand, nine hundred eighty-seven".