103012111111 has 24 divisors (see below), whose sum is σ = 127527400320. Its totient is φ = 81474266016.

The previous prime is 103012111109. The next prime is 103012111123. The reversal of 103012111111 is 111111210301.

It is not a de Polignac number, because 103012111111 - 2¹ = 103012111109 is a prime.

It is a super-2 number, since 2×103012111111² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

103012111111 is a modest number, since divided by 111111 gives 103012 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 103012111091 and 103012111100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103012111141) 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, 3557056 + ... + 3585898.

It is an arithmetic number, because the mean of its divisors is an integer number (5313641680).

Almost surely, 2^103012111111 is an apocalyptic number.

103012111111 is a deficient number, since it is larger than the sum of its proper divisors (24515289209).

103012111111 is a wasteful number, since it uses less digits than its factorization.

103012111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31895 (or 31882 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 13.

Adding to 103012111111 its reverse (111111210301), we get a palindrome (214123321412).

The spelling of 103012111111 in words is "one hundred three billion, twelve million, one hundred eleven thousand, one hundred eleven".