321345222543101 has 2 divisors, whose sum is σ = 321345222543102. Its totient is φ = 321345222543100.

The previous prime is 321345222543061. The next prime is 321345222543109. The reversal of 321345222543101 is 101345222543123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312647854786201 + 8697367756900 = 17681851^2 + 2949130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321345222543101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321345222543109) 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, 160672611271550 + 160672611271551.

It is an arithmetic number, because the mean of its divisors is an integer number (160672611271551).

Almost surely, 2^{321345222543101} is an apocalyptic number.

It is an amenable number.

321345222543101 is a deficient number, since it is larger than the sum of its proper divisors (1).

321345222543101 is an equidigital number, since it uses as much as digits as its factorization.

321345222543101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 321345222543101 in words is "three hundred twenty-one trillion, three hundred forty-five billion, two hundred twenty-two million, five hundred forty-three thousand, one hundred one".