12123140553020 has 24 divisors (see below), whose sum is σ = 29095537327584. Its totient is φ = 4156505332416.

The previous prime is 12123140552989. The next prime is 12123140553089. The reversal of 12123140553020 is 2035504132121.

It is a super-2 number, since 2×12123140553020² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43296930407 + ... + 43296930686.

It is an arithmetic number, because the mean of its divisors is an integer number (1212314055316).

Almost surely, 2^{12123140553020} is an apocalyptic number.

12123140553020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12123140553020 is an abundant number, since it is smaller than the sum of its proper divisors (16972396774564).

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

12123140553020 is a wasteful number, since it uses less digits than its factorization.

12123140553020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86593861109 (or 86593861107 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 12123140553020 its reverse (2035504132121), we get a palindrome (14158644685141).

The spelling of 12123140553020 in words is "twelve trillion, one hundred twenty-three billion, one hundred forty million, five hundred fifty-three thousand, twenty".