123121024124 has 36 divisors (see below), whose sum is σ = 255025998864. Its totient is φ = 50946620928.

The previous prime is 123121024097. The next prime is 123121024127. The reversal of 123121024124 is 421420121321.

It is a self number, because there is not a number n which added to its sum of digits gives 123121024124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123121024127) 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, 2590709 + ... + 2637804.

It is an arithmetic number, because the mean of its divisors is an integer number (7084055524).

Almost surely, 2^123121024124 is an apocalyptic number.

123121024124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123121024124 is an abundant number, since it is smaller than the sum of its proper divisors (131904974740).

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

123121024124 is a wasteful number, since it uses less digits than its factorization.

123121024124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5228582 (or 5228551 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 123121024124 its reverse (421420121321), we get a palindrome (544541145445).

The spelling of 123121024124 in words is "one hundred twenty-three billion, one hundred twenty-one million, twenty-four thousand, one hundred twenty-four".