321112331111 has 32 divisors (see below), whose sum is σ = 381320896320. Its totient is φ = 266562432000.

The previous prime is 321112331093. The next prime is 321112331159. The reversal of 321112331111 is 111133211123.

It is a de Polignac number, because none of the positive numbers 2^k-321112331111 is a prime.

It is a super-2 number, since 2×321112331111² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321112331711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17510195 + ... + 17528523.

It is an arithmetic number, because the mean of its divisors is an integer number (11916278010).

Almost surely, 2^321112331111 is an apocalyptic number.

321112331111 is a deficient number, since it is larger than the sum of its proper divisors (60208565209).

321112331111 is a wasteful number, since it uses less digits than its factorization.

321112331111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19667.

The product of its digits is 108, while the sum is 20.

Adding to 321112331111 its reverse (111133211123), we get a palindrome (432245542234).

The spelling of 321112331111 in words is "three hundred twenty-one billion, one hundred twelve million, three hundred thirty-one thousand, one hundred eleven".