111203123013 has 24 divisors (see below), whose sum is σ = 166142034240. Its totient is φ = 71625003840.

The previous prime is 111203123011. The next prime is 111203123023. The reversal of 111203123013 is 310321302111.

It is not a de Polignac number, because 111203123013 - 2¹ = 111203123011 is a prime.

It is a super-2 number, since 2×111203123013² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111203123011) 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, 1424923 + ... + 1500936.

It is an arithmetic number, because the mean of its divisors is an integer number (6922584760).

Almost surely, 2^111203123013 is an apocalyptic number.

It is an amenable number.

111203123013 is a deficient number, since it is larger than the sum of its proper divisors (54938911227).

111203123013 is a wasteful number, since it uses less digits than its factorization.

111203123013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2926009 (or 2926006 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 111203123013 its reverse (310321302111), we get a palindrome (421524425124).

The spelling of 111203123013 in words is "one hundred eleven billion, two hundred three million, one hundred twenty-three thousand, thirteen".