111113123321 has 4 divisors (see below), whose sum is σ = 111611388672. Its totient is φ = 110614857972.

The previous prime is 111113123281. The next prime is 111113123327. The reversal of 111113123321 is 123321311111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111113123321 - 2¹⁸ = 111112861177 is a prime.

It is a super-2 number, since 2×111113123321² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111113123293 and 111113123302.

It is not an unprimeable number, because it can be changed into a prime (111113123327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249132341 + ... + 249132786.

It is an arithmetic number, because the mean of its divisors is an integer number (27902847168).

Almost surely, 2^111113123321 is an apocalyptic number.

It is an amenable number.

111113123321 is a deficient number, since it is larger than the sum of its proper divisors (498265351).

111113123321 is an equidigital number, since it uses as much as digits as its factorization.

111113123321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498265350.

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

Adding to 111113123321 its reverse (123321311111), we get a palindrome (234434434432).

The spelling of 111113123321 in words is "one hundred eleven billion, one hundred thirteen million, one hundred twenty-three thousand, three hundred twenty-one".