111203123100013 has 24 divisors (see below), whose sum is σ = 131542924653720. Its totient is φ = 93709070421120.

The previous prime is 111203123099977. The next prime is 111203123100029. The reversal of 111203123100013 is 310001321302111.

It can be written as a sum of positive squares in 4 ways, for example, as 3573661310569 + 107629461789444 = 1890413^2 + 10374462^2 .

It is a de Polignac number, because none of the positive numbers 2^k-111203123100013 is a prime.

It is a super-2 number, since 2×111203123100013² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111203123100413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2806606 + ... + 15175087.

It is an arithmetic number, because the mean of its divisors is an integer number (5480955193905).

Almost surely, 2^{111203123100013} is an apocalyptic number.

It is an amenable number.

111203123100013 is a deficient number, since it is larger than the sum of its proper divisors (20339801553707).

111203123100013 is a wasteful number, since it uses less digits than its factorization.

111203123100013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17983837 (or 17983830 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 111203123100013 its reverse (310001321302111), we get a palindrome (421204444402124).

The spelling of 111203123100013 in words is "one hundred eleven trillion, two hundred three billion, one hundred twenty-three million, one hundred thousand, thirteen".