211201020011100 has 144 divisors (see below), whose sum is σ = 698380053815808. Its totient is φ = 48273918792960.

The previous prime is 211201020011087. The next prime is 211201020011117. The reversal of 211201020011100 is 1110020102112.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 180906442 + ... + 182070158.

It is an arithmetic number, because the mean of its divisors is an integer number (4849861484832).

Almost surely, 2^{211201020011100} is an apocalyptic number.

211201020011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211201020011100 is an abundant number, since it is smaller than the sum of its proper divisors (487179033804708).

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

211201020011100 is a wasteful number, since it uses less digits than its factorization.

211201020011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250164 (or 1250157 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 211201020011100 its reverse (1110020102112), we get a palindrome (212311040113212).

The spelling of 211201020011100 in words is "two hundred eleven trillion, two hundred one billion, twenty million, eleven thousand, one hundred".