201100111000 has 64 divisors (see below), whose sum is σ = 474738900480. Its totient is φ = 79728140800.

The previous prime is 201100110977. The next prime is 201100111013. The reversal of 201100111000 is 111001102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 776824 + ... + 1002823.

It is an arithmetic number, because the mean of its divisors is an integer number (7417795320).

Almost surely, 2^201100111000 is an apocalyptic number.

201100111000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201100111000 is an abundant number, since it is smaller than the sum of its proper divisors (273638789480).

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

201100111000 is a wasteful number, since it uses less digits than its factorization.

201100111000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779781 (or 1779767 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 201100111000 its reverse (111001102), we get a palindrome (201211112102).

The spelling of 201100111000 in words is "two hundred one billion, one hundred million, one hundred eleven thousand".