212213210220 has 72 divisors (see below), whose sum is σ = 702232811280. Its totient is φ = 51445626240.

The previous prime is 212213210201. The next prime is 212213210227. The reversal of 212213210220 is 22012312212.

212213210220 is a `hidden beast` number, since 2 + 122 + 1 + 321 + 0 + 220 = 666.

212213210220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 = 212213210193 and 212213210202.

It is not an unprimeable number, because it can be changed into a prime (212213210227) 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, 53587215 + ... + 53591174.

It is an arithmetic number, because the mean of its divisors is an integer number (9753233490).

Almost surely, 2^212213210220 is an apocalyptic number.

212213210220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212213210220 is an abundant number, since it is smaller than the sum of its proper divisors (490019601060).

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

212213210220 is a wasteful number, since it uses less digits than its factorization.

212213210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107178415 (or 107178410 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 212213210220 its reverse (22012312212), we get a palindrome (234225522432).

The spelling of 212213210220 in words is "two hundred twelve billion, two hundred thirteen million, two hundred ten thousand, two hundred twenty".