2001111201100 has 54 divisors (see below), whose sum is σ = 4773063696212. Its totient is φ = 727676796000.

The previous prime is 2001111201049. The next prime is 2001111201121. The reversal of 2001111201100 is 11021111002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 82678446 + ... + 82702645.

Almost surely, 2^{2001111201100} is an apocalyptic number.

2001111201100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001111201100 is an abundant number, since it is smaller than the sum of its proper divisors (2771952495112).

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

2001111201100 is a wasteful number, since it uses less digits than its factorization.

2001111201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165381127 (or 165381109 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 2001111201100 its reverse (11021111002), we get a palindrome (2012132312102).

The spelling of 2001111201100 in words is "two trillion, one billion, one hundred eleven million, two hundred one thousand, one hundred".