321203100113009 has 2 divisors, whose sum is σ = 321203100113010. Its totient is φ = 321203100113008.

The previous prime is 321203100112991. The next prime is 321203100113011. The reversal of 321203100113009 is 900311001302123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257553068371600 + 63650031741409 = 16048460^2 + 7978097^2 .

It is a cyclic number.

It is not a de Polignac number, because 321203100113009 - 2²⁴ = 321203083335793 is a prime.

Together with 321203100113011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (321203100113069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160601550056504 + 160601550056505.

It is an arithmetic number, because the mean of its divisors is an integer number (160601550056505).

Almost surely, 2^{321203100113009} is an apocalyptic number.

It is an amenable number.

321203100113009 is a deficient number, since it is larger than the sum of its proper divisors (1).

321203100113009 is an equidigital number, since it uses as much as digits as its factorization.

321203100113009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 321203100113009 in words is "three hundred twenty-one trillion, two hundred three billion, one hundred million, one hundred thirteen thousand, nine".