211021110200220 has 48 divisors (see below), whose sum is σ = 594622542399648. Its totient is φ = 55913873783040.

The previous prime is 211021110200111. The next prime is 211021110200221. The reversal of 211021110200220 is 22002011120112.

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 211021110200220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211021110200221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11200686451 + ... + 11200705290.

It is an arithmetic number, because the mean of its divisors is an integer number (12387969633326).

Almost surely, 2^{211021110200220} is an apocalyptic number.

211021110200220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211021110200220 is an abundant number, since it is smaller than the sum of its proper divisors (383601432199428).

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

211021110200220 is a wasteful number, since it uses less digits than its factorization.

211021110200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22401391910 (or 22401391908 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211021110200220 its reverse (22002011120112), we get a palindrome (233023121320332).

The spelling of 211021110200220 in words is "two hundred eleven trillion, twenty-one billion, one hundred ten million, two hundred thousand, two hundred twenty".