1111320311123 has 4 divisors (see below), whose sum is σ = 1212349430328. Its totient is φ = 1010291191920.

The previous prime is 1111320311113. The next prime is 1111320311173. The reversal of 1111320311123 is 3211130231111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1111320311123 - 2⁴ = 1111320311107 is a prime.

It is a super-2 number, since 2×1111320311123² (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 = 1111320311095 and 1111320311104.

It is not an unprimeable number, because it can be changed into a prime (1111320311113) 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, 50514559586 + ... + 50514559607.

It is an arithmetic number, because the mean of its divisors is an integer number (303087357582).

Almost surely, 2^{1111320311123} is an apocalyptic number.

1111320311123 is a deficient number, since it is larger than the sum of its proper divisors (101029119205).

1111320311123 is a wasteful number, since it uses less digits than its factorization.

1111320311123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101029119204.

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

Adding to 1111320311123 its reverse (3211130231111), we get a palindrome (4322450542234).

The spelling of 1111320311123 in words is "one trillion, one hundred eleven billion, three hundred twenty million, three hundred eleven thousand, one hundred twenty-three".