321204240123 has 16 divisors (see below), whose sum is σ = 473681653536. Its totient is φ = 192321872640.

The previous prime is 321204240109. The next prime is 321204240163. The reversal of 321204240123 is 321042402123.

It is a happy number.

It is not a de Polignac number, because 321204240123 - 2⁹ = 321204239611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321204240093 and 321204240102.

It is not an unprimeable number, because it can be changed into a prime (321204240163) 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 in 15 ways as a sum of consecutive naturals, for example, 111295938 + ... + 111298823.

It is an arithmetic number, because the mean of its divisors is an integer number (29605103346).

Almost surely, 2^321204240123 is an apocalyptic number.

321204240123 is a deficient number, since it is larger than the sum of its proper divisors (152477413413).

321204240123 is a wasteful number, since it uses less digits than its factorization.

321204240123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222594814.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 321204240123 its reverse (321042402123), we get a palindrome (642246642246).

The spelling of 321204240123 in words is "three hundred twenty-one billion, two hundred four million, two hundred forty thousand, one hundred twenty-three".