321203111200427 has 2 divisors, whose sum is σ = 321203111200428. Its totient is φ = 321203111200426.

The previous prime is 321203111200421. The next prime is 321203111200429. The reversal of 321203111200427 is 724002111302123.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 321203111200427 - 2¹⁰ = 321203111199403 is a prime.

Together with 321203111200429, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321203111200427.

It is not a weakly prime, because it can be changed into another prime (321203111200421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160601555600213 + 160601555600214.

It is an arithmetic number, because the mean of its divisors is an integer number (160601555600214).

Almost surely, 2^{321203111200427} is an apocalyptic number.

321203111200427 is a deficient number, since it is larger than the sum of its proper divisors (1).

321203111200427 is an equidigital number, since it uses as much as digits as its factorization.

321203111200427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The spelling of 321203111200427 in words is "three hundred twenty-one trillion, two hundred three billion, one hundred eleven million, two hundred thousand, four hundred twenty-seven".