12123213530140 has 48 divisors (see below), whose sum is σ = 25821893603520. Its totient is φ = 4780139087360.

The previous prime is 12123213530119. The next prime is 12123213530159. The reversal of 12123213530140 is 4103531232121.

It is a junction number, because it is equal to n+sod(n) for n = 12123213530099 and 12123213530108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7296984 + ... + 8802976.

It is an arithmetic number, because the mean of its divisors is an integer number (537956116740).

Almost surely, 2^{12123213530140} is an apocalyptic number.

12123213530140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12123213530140 is an abundant number, since it is smaller than the sum of its proper divisors (13698680073380).

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

12123213530140 is a wasteful number, since it uses less digits than its factorization.

12123213530140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511742 (or 1511740 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 12123213530140 its reverse (4103531232121), we get a palindrome (16226744762261).

The spelling of 12123213530140 in words is "twelve trillion, one hundred twenty-three billion, two hundred thirteen million, five hundred thirty thousand, one hundred forty".