321221313123 has 8 divisors (see below), whose sum is σ = 428305690128. Its totient is φ = 214142239104.

The previous prime is 321221313121. The next prime is 321221313163. The reversal of 321221313123 is 321313122123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 321221313123 - 2¹ = 321221313121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321221313093 and 321221313102.

It is not an unprimeable number, because it can be changed into a prime (321221313121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1182186 + ... + 1428287.

It is an arithmetic number, because the mean of its divisors is an integer number (53538211266).

Almost surely, 2^321221313123 is an apocalyptic number.

321221313123 is a deficient number, since it is larger than the sum of its proper divisors (107084377005).

321221313123 is a wasteful number, since it uses less digits than its factorization.

321221313123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2651493.

The product of its digits is 1296, while the sum is 24.

Adding to 321221313123 its reverse (321313122123), we get a palindrome (642534435246).

The spelling of 321221313123 in words is "three hundred twenty-one billion, two hundred twenty-one million, three hundred thirteen thousand, one hundred twenty-three".