212201220222 has 24 divisors (see below), whose sum is σ = 459783728040. Its totient is φ = 70731522000.

The previous prime is 212201220221. The next prime is 212201220227. The reversal of 212201220222 is 222022102212.

212201220222 is a `hidden beast` number, since 2 + 1 + 220 + 1 + 220 + 222 = 666.

212201220222 is digitally balanced in base 2, 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 = 212201220195 and 212201220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201220221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 467304 + ... + 801732.

It is an arithmetic number, because the mean of its divisors is an integer number (19157655335).

Almost surely, 2^212201220222 is an apocalyptic number.

212201220222 is an abundant number, since it is smaller than the sum of its proper divisors (247582507818).

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

212201220222 is a wasteful number, since it uses less digits than its factorization.

212201220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369688 (or 369685 counting only the distinct ones).

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

Adding to 212201220222 its reverse (222022102212), we get a palindrome (434223322434).

The spelling of 212201220222 in words is "two hundred twelve billion, two hundred one million, two hundred twenty thousand, two hundred twenty-two".