123315242012 has 12 divisors (see below), whose sum is σ = 215917646616. Its totient is φ = 61624485840.

The previous prime is 123315242009. The next prime is 123315242027. The reversal of 123315242012 is 210242513321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8275418 + ... + 8290305.

It is an arithmetic number, because the mean of its divisors is an integer number (17993137218).

Almost surely, 2^123315242012 is an apocalyptic number.

It is an amenable number.

123315242012 is a deficient number, since it is larger than the sum of its proper divisors (92602404604).

123315242012 is a wasteful number, since it uses less digits than its factorization.

123315242012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16567588 (or 16567586 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 123315242012 its reverse (210242513321), we get a palindrome (333557755333).

The spelling of 123315242012 in words is "one hundred twenty-three billion, three hundred fifteen million, two hundred forty-two thousand, twelve".