221221102110222 has 32 divisors (see below), whose sum is σ = 473622341731200. Its totient is φ = 68675239546848.

The previous prime is 221221102110121. The next prime is 221221102110233. The reversal of 221221102110222 is 222011201122122.

It is a super-3 number, since 3×221221102110222³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16445213473 + ... + 16445226924.

It is an arithmetic number, because the mean of its divisors is an integer number (14800698179100).

Almost surely, 2^{221221102110222} is an apocalyptic number.

221221102110222 is an abundant number, since it is smaller than the sum of its proper divisors (252401239620978).

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

221221102110222 is a wasteful number, since it uses less digits than its factorization.

221221102110222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32890440480.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 221221102110222 its reverse (222011201122122), we get a palindrome (443232303232344).

The spelling of 221221102110222 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, one hundred two million, one hundred ten thousand, two hundred twenty-two".