221210212100222 has 16 divisors (see below), whose sum is σ = 335929334128080. Its totient is φ = 109240251262272.

The previous prime is 221210212100221. The next prime is 221210212100231. The reversal of 221210212100222 is 222001212012122.

It is a junction number, because it is equal to n+sod(n) for n = 221210212100194 and 221210212100203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221210212100221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1620899408 + ... + 1621035875.

It is an arithmetic number, because the mean of its divisors is an integer number (20995583383005).

Almost surely, 2^{221210212100222} is an apocalyptic number.

221210212100222 is a deficient number, since it is larger than the sum of its proper divisors (114719122027858).

221210212100222 is a wasteful number, since it uses less digits than its factorization.

221210212100222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3241935707.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221210212100222 its reverse (222001212012122), we get a palindrome (443211424112344).

The spelling of 221210212100222 in words is "two hundred twenty-one trillion, two hundred ten billion, two hundred twelve million, one hundred thousand, two hundred twenty-two".