211011020021100 has 144 divisors (see below), whose sum is σ = 657512955401120. Its totient is φ = 51939257702400.

The previous prime is 211011020021099. The next prime is 211011020021141. The reversal of 211011020021100 is 1120020110112.

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 (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 106191486 + ... + 108160314.

Almost surely, 2^{211011020021100} is an apocalyptic number.

211011020021100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211011020021100 is an abundant number, since it is smaller than the sum of its proper divisors (446501935380020).

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

211011020021100 is a wasteful number, since it uses less digits than its factorization.

211011020021100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996340 (or 1996333 counting only the distinct ones).

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

Adding to 211011020021100 its reverse (1120020110112), we get a palindrome (212131040131212).

The spelling of 211011020021100 in words is "two hundred eleven trillion, eleven billion, twenty million, twenty-one thousand, one hundred".