12120131234 has 8 divisors (see below), whose sum is σ = 18184114668. Its totient is φ = 6058759680.

The previous prime is 12120131143. The next prime is 12120131263. The reversal of 12120131234 is 43213102121.

It can be written as a sum of positive squares in 2 ways, for example, as 11880346009 + 239785225 = 108997^2 + 15485^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12120131234² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641327 + ... + 659954.

Almost surely, 2^12120131234 is an apocalyptic number.

12120131234 is a deficient number, since it is larger than the sum of its proper divisors (6063983434).

12120131234 is a wasteful number, since it uses less digits than its factorization.

12120131234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305940.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12120131234 its reverse (43213102121), we get a palindrome (55333233355).

The spelling of 12120131234 in words is "twelve billion, one hundred twenty million, one hundred thirty-one thousand, two hundred thirty-four".