1123120312013 has 16 divisors (see below), whose sum is σ = 1284555976704. Its totient is φ = 961932432240.

The previous prime is 1123120312007. The next prime is 1123120312037. The reversal of 1123120312013 is 3102130213211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1123120312013 - 2¹² = 1123120307917 is a prime.

It is a super-2 number, since 2×1123120312013² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123120312213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56453798 + ... + 56473688.

It is an arithmetic number, because the mean of its divisors is an integer number (80284748544).

Almost surely, 2^{1123120312013} is an apocalyptic number.

It is an amenable number.

1123120312013 is a deficient number, since it is larger than the sum of its proper divisors (161435664691).

1123120312013 is a wasteful number, since it uses less digits than its factorization.

1123120312013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25712.

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

Adding to 1123120312013 its reverse (3102130213211), we get a palindrome (4225250525224).

The spelling of 1123120312013 in words is "one trillion, one hundred twenty-three billion, one hundred twenty million, three hundred twelve thousand, thirteen".