12123430510 has 48 divisors (see below), whose sum is σ = 23521513536. Its totient is φ = 4496331456.

The previous prime is 12123430489. The next prime is 12123430511. The reversal of 12123430510 is 1503432121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123430511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133944 + ... + 205396.

It is an arithmetic number, because the mean of its divisors is an integer number (490031532).

Almost surely, 2^12123430510 is an apocalyptic number.

12123430510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12123430510 is a deficient number, since it is larger than the sum of its proper divisors (11398083026).

12123430510 is a wasteful number, since it uses less digits than its factorization.

12123430510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71545 (or 71526 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 12123430510 its reverse (1503432121), we get a palindrome (13626862631).

The spelling of 12123430510 in words is "twelve billion, one hundred twenty-three million, four hundred thirty thousand, five hundred ten".