212102122222 has 4 divisors (see below), whose sum is σ = 318153183336. Its totient is φ = 106051061110.

The previous prime is 212102122187. The next prime is 212102122241. The reversal of 212102122222 is 222221201212.

212102122222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 212102122222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53025530554 + ... + 53025530557.

It is an arithmetic number, because the mean of its divisors is an integer number (79538295834).

Almost surely, 2^212102122222 is an apocalyptic number.

212102122222 is a deficient number, since it is larger than the sum of its proper divisors (106051061114).

212102122222 is a wasteful number, since it uses less digits than its factorization.

212102122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106051061113.

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

Adding to 212102122222 its reverse (222221201212), we get a palindrome (434323323434).

The spelling of 212102122222 in words is "two hundred twelve billion, one hundred two million, one hundred twenty-two thousand, two hundred twenty-two".