212210022222222 has 128 divisors (see below), whose sum is σ = 466404152675328. Its totient is φ = 64162332748800.

The previous prime is 212210022222217. The next prime is 212210022222239. The reversal of 212210022222222 is 222222220012212.

212210022222222 is a modest number, since divided by 22222222 gives 2122100 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 212210022222192 and 212210022222201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 208209597 + ... + 209226327.

It is an arithmetic number, because the mean of its divisors is an integer number (3643782442776).

Almost surely, 2^{212210022222222} is an apocalyptic number.

212210022222222 is an abundant number, since it is smaller than the sum of its proper divisors (254194130453106).

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

212210022222222 is a wasteful number, since it uses less digits than its factorization.

212210022222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017834.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 212210022222222 its reverse (222222220012212), we get a palindrome (434432242234434).

The spelling of 212210022222222 in words is "two hundred twelve trillion, two hundred ten billion, twenty-two million, two hundred twenty-two thousand, two hundred twenty-two".