123102512512 has 32 divisors (see below), whose sum is σ = 280278043920. Its totient is φ = 52758219264.

The previous prime is 123102512501. The next prime is 123102512513. The reversal of 123102512512 is 215215201321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123102512513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68694703 + ... + 68696494.

Almost surely, 2^123102512512 is an apocalyptic number.

It is an amenable number.

123102512512 is an abundant number, since it is smaller than the sum of its proper divisors (157175531408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123102512512 is an equidigital number, since it uses as much as digits as its factorization.

123102512512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137391218 (or 137391206 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 123102512512 its reverse (215215201321), we get a palindrome (338317713833).

The spelling of 123102512512 in words is "one hundred twenty-three billion, one hundred two million, five hundred twelve thousand, five hundred twelve".