211020331302320 has 120 divisors (see below), whose sum is σ = 506853408618144. Its totient is φ = 81701295833088.

The previous prime is 211020331302301. The next prime is 211020331302323. The reversal of 211020331302320 is 23203133020112.

It is not an unprimeable number, because it can be changed into a prime (211020331302323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16145717 + ... + 26129003.

Almost surely, 2^{211020331302320} is an apocalyptic number.

211020331302320 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 211020331302320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253426704309072).

211020331302320 is an abundant number, since it is smaller than the sum of its proper divisors (295833077315824).

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

211020331302320 is a wasteful number, since it uses less digits than its factorization.

211020331302320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9983567 (or 9983524 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 211020331302320 its reverse (23203133020112), we get a palindrome (234223464322432).

The spelling of 211020331302320 in words is "two hundred eleven trillion, twenty billion, three hundred thirty-one million, three hundred two thousand, three hundred twenty".