321200312123 has 2 divisors, whose sum is σ = 321200312124. Its totient is φ = 321200312122.

The previous prime is 321200312117. The next prime is 321200312131. The reversal of 321200312123 is 321213002123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321200312123 - 2³⁸ = 46322405179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321200312095 and 321200312104.

It is not a weakly prime, because it can be changed into another prime (321200312423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160600156061 + 160600156062.

It is an arithmetic number, because the mean of its divisors is an integer number (160600156062).

Almost surely, 2^321200312123 is an apocalyptic number.

321200312123 is a deficient number, since it is larger than the sum of its proper divisors (1).

321200312123 is an equidigital number, since it uses as much as digits as its factorization.

321200312123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 321200312123 its reverse (321213002123), we get a palindrome (642413314246).

The spelling of 321200312123 in words is "three hundred twenty-one billion, two hundred million, three hundred twelve thousand, one hundred twenty-three".