123321112111 has 8 divisors (see below), whose sum is σ = 124459766784. Its totient is φ = 122185914240.

The previous prime is 123321112099. The next prime is 123321112151. The reversal of 123321112111 is 111211123321.

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

It is a cyclic number.

It is not a de Polignac number, because 123321112111 - 2⁷ = 123321111983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123321112151) 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, 792495 + ... + 935248.

It is an arithmetic number, because the mean of its divisors is an integer number (15557470848).

Almost surely, 2^123321112111 is an apocalyptic number.

123321112111 is a deficient number, since it is larger than the sum of its proper divisors (1138654673).

123321112111 is a wasteful number, since it uses less digits than its factorization.

123321112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728401.

The product of its digits is 72, while the sum is 19.

Adding to 123321112111 its reverse (111211123321), we get a palindrome (234532235432).

The spelling of 123321112111 in words is "one hundred twenty-three billion, three hundred twenty-one million, one hundred twelve thousand, one hundred eleven".