221101022110222 has 32 divisors (see below), whose sum is σ = 351043607594880. Its totient is φ = 104152637967840.

The previous prime is 221101022110187. The next prime is 221101022110223. The reversal of 221101022110222 is 222011220101122.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 221101022110222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221101022110223) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17145568 + ... + 27132499.

It is an arithmetic number, because the mean of its divisors is an integer number (10970112737340).

Almost surely, 2^{221101022110222} is an apocalyptic number.

221101022110222 is a deficient number, since it is larger than the sum of its proper divisors (129942585484658).

221101022110222 is a wasteful number, since it uses less digits than its factorization.

221101022110222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44278816.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221101022110222 its reverse (222011220101122), we get a palindrome (443112242211344).

The spelling of 221101022110222 in words is "two hundred twenty-one trillion, one hundred one billion, twenty-two million, one hundred ten thousand, two hundred twenty-two".