1311200201100 has 144 divisors (see below), whose sum is σ = 4043960614400. Its totient is φ = 327057419520.

The previous prime is 1311200201063. The next prime is 1311200201153. The reversal of 1311200201100 is 11020021131.

It is a Harshad number since it is a multiple of its sum of digits (12).

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 47 ways as a sum of consecutive naturals, for example, 1005619 + ... + 1906218.

Almost surely, 2^{1311200201100} is an apocalyptic number.

1311200201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311200201100 is an abundant number, since it is smaller than the sum of its proper divisors (2732760413300).

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

1311200201100 is a wasteful number, since it uses less digits than its factorization.

1311200201100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2911952 (or 2911945 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 1311200201100 its reverse (11020021131), we get a palindrome (1322220222231).

The spelling of 1311200201100 in words is "one trillion, three hundred eleven billion, two hundred million, two hundred one thousand, one hundred".