211202220002100 has 144 divisors (see below), whose sum is σ = 643492839864000. Its totient is φ = 53335414379520.

The previous prime is 211202220002083. The next prime is 211202220002129. The reversal of 211202220002100 is 1200022202112.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 211202220002100.

It is a congruent number.

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, 7261152 + ... + 21797448.

Almost surely, 2^{211202220002100} is an apocalyptic number.

211202220002100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211202220002100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321746419932000).

211202220002100 is an abundant number, since it is smaller than the sum of its proper divisors (432290619861900).

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

211202220002100 is a wasteful number, since it uses less digits than its factorization.

211202220002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14538882 (or 14538875 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 211202220002100 its reverse (1200022202112), we get a palindrome (212402242204212).

The spelling of 211202220002100 in words is "two hundred eleven trillion, two hundred two billion, two hundred twenty million, two thousand, one hundred".