321612111121 has 12 divisors (see below), whose sum is σ = 373124535168. Its totient is φ = 271553056632.

The previous prime is 321612111097. The next prime is 321612111131. The reversal of 321612111121 is 121111216123.

It is not a de Polignac number, because 321612111121 - 2²¹ = 321610013969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321612111092 and 321612111101.

It is not an unprimeable number, because it can be changed into a prime (321612111131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5086041 + ... + 5148886.

It is an arithmetic number, because the mean of its divisors is an integer number (31093711264).

Almost surely, 2^321612111121 is an apocalyptic number.

It is an amenable number.

321612111121 is a deficient number, since it is larger than the sum of its proper divisors (51512424047).

321612111121 is an equidigital number, since it uses as much as digits as its factorization.

321612111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10235068 (or 10235001 counting only the distinct ones).

The product of its digits is 144, while the sum is 22.

Adding to 321612111121 its reverse (121111216123), we get a palindrome (442723327244).

The spelling of 321612111121 in words is "three hundred twenty-one billion, six hundred twelve million, one hundred eleven thousand, one hundred twenty-one".