211203223320 has 256 divisors, whose sum is σ = 674335549440. Its totient is φ = 52807569408.

The previous prime is 211203223277. The next prime is 211203223333. The reversal of 211203223320 is 23322302112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33644022 + ... + 33650298.

It is an arithmetic number, because the mean of its divisors is an integer number (2634123240).

Almost surely, 2^211203223320 is an apocalyptic number.

211203223320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211203223320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337167774720).

211203223320 is an abundant number, since it is smaller than the sum of its proper divisors (463132326120).

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

211203223320 is a wasteful number, since it uses less digits than its factorization.

211203223320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6554 (or 6550 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 211203223320 its reverse (23322302112), we get a palindrome (234525525432).

The spelling of 211203223320 in words is "two hundred eleven billion, two hundred three million, two hundred twenty-three thousand, three hundred twenty".