1123012103123 has 4 divisors (see below), whose sum is σ = 1123421814768. Its totient is φ = 1122602391480.

The previous prime is 1123012103119. The next prime is 1123012103203. The reversal of 1123012103123 is 3213012103211.

It is a happy number.

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 1123012103123 - 2² = 1123012103119 is a prime.

It is a super-2 number, since 2×1123012103123² (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 = 1123012103095 and 1123012103104.

It is not an unprimeable number, because it can be changed into a prime (1123012103113) 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, 204851711 + ... + 204857192.

It is an arithmetic number, because the mean of its divisors is an integer number (280855453692).

Almost surely, 2^{1123012103123} is an apocalyptic number.

1123012103123 is a deficient number, since it is larger than the sum of its proper divisors (409711645).

1123012103123 is an equidigital number, since it uses as much as digits as its factorization.

1123012103123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409711644.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1123012103123 its reverse (3213012103211), we get a palindrome (4336024206334).

The spelling of 1123012103123 in words is "one trillion, one hundred twenty-three billion, twelve million, one hundred three thousand, one hundred twenty-three".