103131212012111 has 12 divisors (see below), whose sum is σ = 107877221496912. Its totient is φ = 98585859494496.

The previous prime is 103131212012099. The next prime is 103131212012137. The reversal of 103131212012111 is 111210212131301.

It is not a de Polignac number, because 103131212012111 - 2¹⁴ = 103131211995727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103131212012141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59807966 + ... + 61508171.

It is an arithmetic number, because the mean of its divisors is an integer number (8989768458076).

Almost surely, 2^{103131212012111} is an apocalyptic number.

103131212012111 is a deficient number, since it is larger than the sum of its proper divisors (4746009484801).

103131212012111 is a wasteful number, since it uses less digits than its factorization.

103131212012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121317790 (or 121317767 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 103131212012111 its reverse (111210212131301), we get a palindrome (214341424143412).

The spelling of 103131212012111 in words is "one hundred three trillion, one hundred thirty-one billion, two hundred twelve million, twelve thousand, one hundred eleven".