2003123112111 has 32 divisors (see below), whose sum is σ = 3316330967040. Its totient is φ = 1184403902400.

The previous prime is 2003123112071. The next prime is 2003123112121. The reversal of 2003123112111 is 1112113213002.

2003123112111 is a `hidden beast` number, since 20 + 0 + 312 + 311 + 21 + 1 + 1 = 666.

It is not a de Polignac number, because 2003123112111 - 2²³ = 2003114723503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003123112121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82238095 + ... + 82262448.

It is an arithmetic number, because the mean of its divisors is an integer number (103635342720).

Almost surely, 2^{2003123112111} is an apocalyptic number.

2003123112111 is a deficient number, since it is larger than the sum of its proper divisors (1313207854929).

2003123112111 is a wasteful number, since it uses less digits than its factorization.

2003123112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164500604 (or 164500598 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 2003123112111 its reverse (1112113213002), we get a palindrome (3115236325113).

The spelling of 2003123112111 in words is "two trillion, three billion, one hundred twenty-three million, one hundred twelve thousand, one hundred eleven".