212012220222 has 48 divisors (see below), whose sum is σ = 514663589232. Its totient is φ = 62509743360.

The previous prime is 212012220179. The next prime is 212012220223. The reversal of 212012220222 is 222022210212.

212012220222 is a `hidden beast` number, since 21 + 201 + 2 + 220 + 222 = 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 = 212012220195 and 212012220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012220223) 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, 14462523 + ... + 14477174.

It is an arithmetic number, because the mean of its divisors is an integer number (10722158109).

Almost surely, 2^212012220222 is an apocalyptic number.

212012220222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212012220222 is an abundant number, since it is smaller than the sum of its proper divisors (302651369010).

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

212012220222 is a wasteful number, since it uses less digits than its factorization.

212012220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28939753 (or 28939750 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 212012220222 its reverse (222022210212), we get a palindrome (434034430434).

It can be divided in two parts, 212012 and 220222, that added together give a palindrome (432234).

The spelling of 212012220222 in words is "two hundred twelve billion, twelve million, two hundred twenty thousand, two hundred twenty-two".