1200123330100 has 36 divisors (see below), whose sum is σ = 2605395028768. Its totient is φ = 479841516000.

The previous prime is 1200123330061. The next prime is 1200123330113. The reversal of 1200123330100 is 10333210021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2365446 + ... + 2827645.

Almost surely, 2^{1200123330100} is an apocalyptic number.

1200123330100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200123330100 is an abundant number, since it is smaller than the sum of its proper divisors (1405271698668).

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

1200123330100 is a wasteful number, since it uses less digits than its factorization.

1200123330100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5195416 (or 5195409 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 1200123330100 its reverse (10333210021), we get a palindrome (1210456540121).

The spelling of 1200123330100 in words is "one trillion, two hundred billion, one hundred twenty-three million, three hundred thirty thousand, one hundred".