212021122222 has 96 divisors (see below), whose sum is σ = 405500546304. Its totient is φ = 82388275200.

The previous prime is 212021122177. The next prime is 212021122259. The reversal of 212021122222 is 222221120212.

It is a self number, because there is not a number n which added to its sum of digits gives 212021122222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 77013198 + ... + 77015950.

It is an arithmetic number, because the mean of its divisors is an integer number (4223964024).

Almost surely, 2^212021122222 is an apocalyptic number.

212021122222 is a deficient number, since it is larger than the sum of its proper divisors (193479424082).

212021122222 is a wasteful number, since it uses less digits than its factorization.

212021122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3834 (or 3827 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212021122222 its reverse (222221120212), we get a palindrome (434242242434).

The spelling of 212021122222 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-two thousand, two hundred twenty-two".