321111101111 has 16 divisors (see below), whose sum is σ = 342690566400. Its totient is φ = 300000708288.

The previous prime is 321111101107. The next prime is 321111101123. The reversal of 321111101111 is 111101111123.

It is a cyclic number.

It is not a de Polignac number, because 321111101111 - 2² = 321111101107 is a prime.

It is a super-2 number, since 2×321111101111² (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 (321111101141) 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, 14217950 + ... + 14240516.

It is an arithmetic number, because the mean of its divisors is an integer number (21418160400).

Almost surely, 2^321111101111 is an apocalyptic number.

321111101111 is a deficient number, since it is larger than the sum of its proper divisors (21579465289).

321111101111 is a wasteful number, since it uses less digits than its factorization.

321111101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32918.

The product of its (nonzero) digits is 6, while the sum is 14.

Adding to 321111101111 its reverse (111101111123), we get a palindrome (432212212234).

The spelling of 321111101111 in words is "three hundred twenty-one billion, one hundred eleven million, one hundred one thousand, one hundred eleven".