321420123123 has 16 divisors (see below), whose sum is σ = 475444252800. Its totient is φ = 191498377280.

The previous prime is 321420123119. The next prime is 321420123181. The reversal of 321420123123 is 321321024123.

It is a cyclic number.

It is not a de Polignac number, because 321420123123 - 2² = 321420123119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321420123093 and 321420123102.

It is not an unprimeable number, because it can be changed into a prime (321420121123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82540458 + ... + 82544351.

It is an arithmetic number, because the mean of its divisors is an integer number (29715265800).

Almost surely, 2^321420123123 is an apocalyptic number.

321420123123 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

321420123123 is a deficient number, since it is larger than the sum of its proper divisors (154024129677).

321420123123 is a wasteful number, since it uses less digits than its factorization.

321420123123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165084882.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 321420123123 its reverse (321321024123), we get a palindrome (642741147246).

The spelling of 321420123123 in words is "three hundred twenty-one billion, four hundred twenty million, one hundred twenty-three thousand, one hundred twenty-three".