1243100012200 has 48 divisors (see below), whose sum is σ = 2890418377500. Its totient is φ = 497203729920.

The previous prime is 1243100012179. The next prime is 1243100012221. The reversal of 1243100012200 is 22100013421.

It is an interprime number because it is at equal distance from previous prime (1243100012179) and next prime (1243100012221).

It can be written as a sum of positive squares in 6 ways, for example, as 696987880164 + 546112132036 = 834858^2 + 738994^2 .

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 11 ways as a sum of consecutive naturals, for example, 2610156 + ... + 3049444.

Almost surely, 2^{1243100012200} is an apocalyptic number.

1243100012200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243100012200 is an abundant number, since it is smaller than the sum of its proper divisors (1647318365300).

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

1243100012200 is a wasteful number, since it uses less digits than its factorization.

1243100012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453454 (or 453445 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1243100012200 its reverse (22100013421), we get a palindrome (1265200025621).

The spelling of 1243100012200 in words is "one trillion, two hundred forty-three billion, one hundred million, twelve thousand, two hundred".