1000012011200 has 84 divisors (see below), whose sum is σ = 2545504830240. Its totient is φ = 386211517440.

The previous prime is 1000012011151. The next prime is 1000012011203. The reversal of 1000012011200 is 21102100001.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is not an unprimeable number, because it can be changed into a prime (1000012011203) by changing a digit.

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, 10729592 + ... + 10822391.

Almost surely, 2^{1000012011200} is an apocalyptic number.

1000012011200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000012011200 is an abundant number, since it is smaller than the sum of its proper divisors (1545492819040).

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

1000012011200 is a wasteful number, since it uses less digits than its factorization.

1000012011200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21552034 (or 21552019 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1000012011200 its reverse (21102100001), we get a palindrome (1021114111201).

The spelling of 1000012011200 in words is "one trillion, twelve million, eleven thousand, two hundred".