1312120123200 has 168 divisors, whose sum is σ = 4783163976960. Its totient is φ = 349898688000.

The previous prime is 1312120123183. The next prime is 1312120123201. The reversal of 1312120123200 is 23210212131.

1312120123200 is a `hidden beast` number, since 1 + 312 + 1 + 20 + 12 + 320 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312120123201) 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, 15143376 + ... + 15229775.

Almost surely, 2^{1312120123200} is an apocalyptic number.

1312120123200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312120123200 is an abundant number, since it is smaller than the sum of its proper divisors (3471043853760).

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

1312120123200 is a wasteful number, since it uses less digits than its factorization.

1312120123200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30373182 (or 30373161 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1312120123200 its reverse (23210212131), we get a palindrome (1335330335331).

The spelling of 1312120123200 in words is "one trillion, three hundred twelve billion, one hundred twenty million, one hundred twenty-three thousand, two hundred".