211001010220 has 96 divisors (see below), whose sum is σ = 594934373376. Its totient is φ = 60707577600.

The previous prime is 211001010217. The next prime is 211001010229. The reversal of 211001010220 is 22010100112.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 211001010197 and 211001010206.

It is not an unprimeable number, because it can be changed into a prime (211001010229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5249736 + ... + 5289775.

It is an arithmetic number, because the mean of its divisors is an integer number (6197233056).

Almost surely, 2^211001010220 is an apocalyptic number.

211001010220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211001010220 is an abundant number, since it is smaller than the sum of its proper divisors (383933363156).

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

211001010220 is a wasteful number, since it uses less digits than its factorization.

211001010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10539551 (or 10539549 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 211001010220 its reverse (22010100112), we get a palindrome (233011110332).

The spelling of 211001010220 in words is "two hundred eleven billion, one million, ten thousand, two hundred twenty".