211001012122220 has 24 divisors (see below), whose sum is σ = 443400913196304. Its totient is φ = 84343492898496.

The previous prime is 211001012122213. The next prime is 211001012122223. The reversal of 211001012122220 is 22221210100112.

It is not an unprimeable number, because it can be changed into a prime (211001012122223) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3556966499 + ... + 3557025818.

It is an arithmetic number, because the mean of its divisors is an integer number (18475038049846).

Almost surely, 2^{211001012122220} is an apocalyptic number.

211001012122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211001012122220 is an abundant number, since it is smaller than the sum of its proper divisors (232399901074084).

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

211001012122220 is a wasteful number, since it uses less digits than its factorization.

211001012122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7113993809 (or 7113993807 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211001012122220 its reverse (22221210100112), we get a palindrome (233222222222332).

The spelling of 211001012122220 in words is "two hundred eleven trillion, one billion, twelve million, one hundred twenty-two thousand, two hundred twenty".