211011100000220 has 48 divisors (see below), whose sum is σ = 477219838041408. Its totient is φ = 77910138593280.

The previous prime is 211011100000079. The next prime is 211011100000273. The reversal of 211011100000220 is 22000001110112.

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, 3713180 + ... + 20876060.

It is an arithmetic number, because the mean of its divisors is an integer number (9942079959196).

Almost surely, 2^{211011100000220} is an apocalyptic number.

211011100000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211011100000220 is an abundant number, since it is smaller than the sum of its proper divisors (266208738041188).

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

211011100000220 is a wasteful number, since it uses less digits than its factorization.

211011100000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17210190 (or 17210188 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 211011100000220 its reverse (22000001110112), we get a palindrome (233011101110332).

The spelling of 211011100000220 in words is "two hundred eleven trillion, eleven billion, one hundred million, two hundred twenty", and thus it is an aban number.