123102121103 has 16 divisors (see below), whose sum is σ = 133197024576. Its totient is φ = 113097116160.

The previous prime is 123102121081. The next prime is 123102121157. The reversal of 123102121103 is 301121201321.

It is a cyclic number.

It is not a de Polignac number, because 123102121103 - 2⁶ = 123102121039 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 (123102121193) 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, 6045926 + ... + 6066252.

It is an arithmetic number, because the mean of its divisors is an integer number (8324814036).

Almost surely, 2^123102121103 is an apocalyptic number.

123102121103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123102121103 is a deficient number, since it is larger than the sum of its proper divisors (10094903473).

123102121103 is a wasteful number, since it uses less digits than its factorization.

123102121103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22514.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 123102121103 its reverse (301121201321), we get a palindrome (424223322424).

The spelling of 123102121103 in words is "one hundred twenty-three billion, one hundred two million, one hundred twenty-one thousand, one hundred three".