1212123312300 has 72 divisors (see below), whose sum is σ = 3517126018000. Its totient is φ = 322306686720.

The previous prime is 1212123312299. The next prime is 1212123312551. The reversal of 1212123312300 is 32133212121.

It is a super-2 number, since 2×1212123312300² (a number of 25 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 5683855 + ... + 5893254.

Almost surely, 2^{1212123312300} is an apocalyptic number.

1212123312300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212123312300 is an abundant number, since it is smaller than the sum of its proper divisors (2305002705700).

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

1212123312300 is a wasteful number, since it uses less digits than its factorization.

1212123312300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11577475 (or 11577468 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1212123312300 its reverse (32133212121), we get a palindrome (1244256524421).

The spelling of 1212123312300 in words is "one trillion, two hundred twelve billion, one hundred twenty-three million, three hundred twelve thousand, three hundred".