212333013220 has 96 divisors (see below), whose sum is σ = 475017177600. Its totient is φ = 79556843520.

The previous prime is 212333013203. The next prime is 212333013241. The reversal of 212333013220 is 22310333212.

It is a junction number, because it is equal to n+sod(n) for n = 212333013191 and 212333013200.

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, 4844524 + ... + 4888156.

It is an arithmetic number, because the mean of its divisors is an integer number (4948095600).

Almost surely, 2^212333013220 is an apocalyptic number.

212333013220 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 212333013220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237508588800).

212333013220 is an abundant number, since it is smaller than the sum of its proper divisors (262684164380).

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

212333013220 is a wasteful number, since it uses less digits than its factorization.

212333013220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43885 (or 43883 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 212333013220 its reverse (22310333212), we get a palindrome (234643346432).

The spelling of 212333013220 in words is "two hundred twelve billion, three hundred thirty-three million, thirteen thousand, two hundred twenty".