321212121212123 has 2 divisors, whose sum is σ = 321212121212124. Its totient is φ = 321212121212122.

The previous prime is 321212121212111. The next prime is 321212121212149.

321212121212123 is nontrivially palindromic in base 10.

321212121212123 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an a-pointer prime, because the next prime (321212121212149) can be obtained adding 321212121212123 to its sum of digits (26).

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321212121212123 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 321212121212092 and 321212121212101.

It is not a weakly prime, because it can be changed into another prime (321212121212183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160606060606061 + 160606060606062.

It is an arithmetic number, because the mean of its divisors is an integer number (160606060606062).

Almost surely, 2^{321212121212123} is an apocalyptic number.

321212121212123 is a deficient number, since it is larger than the sum of its proper divisors (1).

321212121212123 is an equidigital number, since it uses as much as digits as its factorization.

321212121212123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 26.

The spelling of 321212121212123 in words is "three hundred twenty-one trillion, two hundred twelve billion, one hundred twenty-one million, two hundred twelve thousand, one hundred twenty-three".