211444024220 has 48 divisors (see below), whose sum is σ = 521660508768. Its totient is φ = 70974216960.

The previous prime is 211444024213. The next prime is 211444024229. The reversal of 211444024220 is 22420444112.

It is a happy number.

211444024220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 211444024220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211444024229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36962879 + ... + 36968598.

It is an arithmetic number, because the mean of its divisors is an integer number (10867927266).

Almost surely, 2^211444024220 is an apocalyptic number.

211444024220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211444024220 is an abundant number, since it is smaller than the sum of its proper divisors (310216484548).

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

211444024220 is a wasteful number, since it uses less digits than its factorization.

211444024220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73931510 (or 73931508 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 211444024220 its reverse (22420444112), we get a palindrome (233864468332).

The spelling of 211444024220 in words is "two hundred eleven billion, four hundred forty-four million, twenty-four thousand, two hundred twenty".