211100211000220 has 24 divisors (see below), whose sum is σ = 443426099521104. Its totient is φ = 84418054605696.

The previous prime is 211100211000199. The next prime is 211100211000223. The reversal of 211100211000220 is 22000112001112.

It is a self number, because there is not a number n which added to its sum of digits gives 211100211000220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211100211000223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1376783574 + ... + 1376936893.

It is an arithmetic number, because the mean of its divisors is an integer number (18476087480046).

Almost surely, 2^{211100211000220} is an apocalyptic number.

211100211000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211100211000220 is an abundant number, since it is smaller than the sum of its proper divisors (232325888520884).

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

211100211000220 is a wasteful number, since it uses less digits than its factorization.

211100211000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753724309 (or 2753724307 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211100211000220 its reverse (22000112001112), we get a palindrome (233100323001332).

The spelling of 211100211000220 in words is "two hundred eleven trillion, one hundred billion, two hundred eleven million, two hundred twenty", and thus it is an aban number.