223321001321987 has 2 divisors, whose sum is σ = 223321001321988. Its totient is φ = 223321001321986.

The previous prime is 223321001321983. The next prime is 223321001322047. The reversal of 223321001321987 is 789123100123322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223321001321987 - 2² = 223321001321983 is a prime.

It is not a weakly prime, because it can be changed into another prime (223321001321983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111660500660993 + 111660500660994.

It is an arithmetic number, because the mean of its divisors is an integer number (111660500660994).

Almost surely, 2^{223321001321987} is an apocalyptic number.

223321001321987 is a deficient number, since it is larger than the sum of its proper divisors (1).

223321001321987 is an equidigital number, since it uses as much as digits as its factorization.

223321001321987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 223321001321987 in words is "two hundred twenty-three trillion, three hundred twenty-one billion, one million, three hundred twenty-one thousand, nine hundred eighty-seven".