221212200022222 has 16 divisors (see below), whose sum is σ = 343558538380800. Its totient is φ = 106699314517600.

The previous prime is 221212200022213. The next prime is 221212200022291. The reversal of 221212200022222 is 222220002212122.

It is a junction number, because it is equal to n+sod(n) for n = 221212200022193 and 221212200022202.

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 7 ways as a sum of consecutive naturals, for example, 1656754897 + ... + 1656888412.

It is an arithmetic number, because the mean of its divisors is an integer number (21472408648800).

Almost surely, 2^{221212200022222} is an apocalyptic number.

221212200022222 is a deficient number, since it is larger than the sum of its proper divisors (122346338358578).

221212200022222 is a wasteful number, since it uses less digits than its factorization.

221212200022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313644491.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 221212200022222 its reverse (222220002212122), we get a palindrome (443432202234344).

The spelling of 221212200022222 in words is "two hundred twenty-one trillion, two hundred twelve billion, two hundred million, twenty-two thousand, two hundred twenty-two".