212111311320 has 192 divisors, whose sum is σ = 730665580320. Its totient is φ = 53180854272.

The previous prime is 212111311319. The next prime is 212111311333. The reversal of 212111311320 is 23113111212.

212111311320 is a `hidden beast` number, since 2 + 1 + 21 + 11 + 311 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212111311293 and 212111311302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6084259 + ... + 6119021.

Almost surely, 2^212111311320 is an apocalyptic number.

212111311320 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 212111311320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365332790160).

212111311320 is an abundant number, since it is smaller than the sum of its proper divisors (518554269000).

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

212111311320 is a wasteful number, since it uses less digits than its factorization.

212111311320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35794 (or 35787 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 212111311320 its reverse (23113111212), we get a palindrome (235224422532).

The spelling of 212111311320 in words is "two hundred twelve billion, one hundred eleven million, three hundred eleven thousand, three hundred twenty".