123102002111 has 16 divisors (see below), whose sum is σ = 134730822528. Its totient is φ = 111546386400.

The previous prime is 123102002099. The next prime is 123102002113. The reversal of 123102002111 is 111200201321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123102002111 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 (123102002113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14969981 + ... + 14978201.

It is an arithmetic number, because the mean of its divisors is an integer number (8420676408).

Almost surely, 2^123102002111 is an apocalyptic number.

123102002111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123102002111 is a deficient number, since it is larger than the sum of its proper divisors (11628820417).

123102002111 is a wasteful number, since it uses less digits than its factorization.

123102002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12502.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 123102002111 its reverse (111200201321), we get a palindrome (234302203432).

The spelling of 123102002111 in words is "one hundred twenty-three billion, one hundred two million, two thousand, one hundred eleven".