12124220512 has 24 divisors (see below), whose sum is σ = 24041291400. Its totient is φ = 6018495744.

The previous prime is 12124220509. The next prime is 12124220513. The reversal of 12124220512 is 21502242121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12124220513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1358437 + ... + 1367332.

It is an arithmetic number, because the mean of its divisors is an integer number (1001720475).

Almost surely, 2^12124220512 is an apocalyptic number.

It is an amenable number.

12124220512 is a deficient number, since it is larger than the sum of its proper divisors (11917070888).

12124220512 is a wasteful number, since it uses less digits than its factorization.

12124220512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2725918 (or 2725910 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 12124220512 its reverse (21502242121), we get a palindrome (33626462633).

The spelling of 12124220512 in words is "twelve billion, one hundred twenty-four million, two hundred twenty thousand, five hundred twelve".