212201022222 has 48 divisors (see below), whose sum is σ = 525510247392. Its totient is φ = 60621929280.

The previous prime is 212201022203. The next prime is 212201022301. The reversal of 212201022222 is 222220102212.

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 = 212201022195 and 212201022204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1065088 + ... + 1248524.

It is an arithmetic number, because the mean of its divisors is an integer number (10948130154).

Almost surely, 2^212201022222 is an apocalyptic number.

212201022222 is an abundant number, since it is smaller than the sum of its proper divisors (313309225170).

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

212201022222 is a wasteful number, since it uses less digits than its factorization.

212201022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192633 (or 192630 counting only the distinct ones).

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

Adding to 212201022222 its reverse (222220102212), we get a palindrome (434421124434).

The spelling of 212201022222 in words is "two hundred twelve billion, two hundred one million, twenty-two thousand, two hundred twenty-two".