212111010320 has 160 divisors (see below), whose sum is σ = 561926605824. Its totient is φ = 73706124800.

The previous prime is 212111010317. The next prime is 212111010379. The reversal of 212111010320 is 23010111212.

It is a super-2 number, since 2×212111010320² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212111010295 and 212111010304.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23534615 + ... + 23543625.

Almost surely, 2^212111010320 is an apocalyptic number.

212111010320 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 212111010320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280963302912).

212111010320 is an abundant number, since it is smaller than the sum of its proper divisors (349815595504).

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

212111010320 is a wasteful number, since it uses less digits than its factorization.

212111010320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10221 (or 10215 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 212111010320 its reverse (23010111212), we get a palindrome (235121121532).

The spelling of 212111010320 in words is "two hundred twelve billion, one hundred eleven million, ten thousand, three hundred twenty".