1111312321123 has 8 divisors (see below), whose sum is σ = 1128354264576. Its totient is φ = 1094308979400.

The previous prime is 1111312321117. The next prime is 1111312321139. The reversal of 1111312321123 is 3211232131111.

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 1111312321123 - 2⁹ = 1111312320611 is a prime.

It is a super-2 number, since 2×1111312321123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111312321094 and 1111312321103.

It is not an unprimeable number, because it can be changed into a prime (1111312321103) 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, 9592411 + ... + 9707572.

It is an arithmetic number, because the mean of its divisors is an integer number (141044283072).

Almost surely, 2^{1111312321123} is an apocalyptic number.

1111312321123 is a deficient number, since it is larger than the sum of its proper divisors (17041943453).

1111312321123 is an equidigital number, since it uses as much as digits as its factorization.

1111312321123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19300865.

The product of its digits is 216, while the sum is 22.

Adding to 1111312321123 its reverse (3211232131111), we get a palindrome (4322544452234).

The spelling of 1111312321123 in words is "one trillion, one hundred eleven billion, three hundred twelve million, three hundred twenty-one thousand, one hundred twenty-three".