221122222102 has 16 divisors (see below), whose sum is σ = 332057925360. Its totient is φ = 110436292512.

The previous prime is 221122222081. The next prime is 221122222103. The reversal of 221122222102 is 201222221122.

It is a self number, because there is not a number n which added to its sum of digits gives 221122222102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221122222103) 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, 14863924 + ... + 14878792.

It is an arithmetic number, because the mean of its divisors is an integer number (20753620335).

Almost surely, 2^221122222102 is an apocalyptic number.

221122222102 is a deficient number, since it is larger than the sum of its proper divisors (110935703258).

221122222102 is a wasteful number, since it uses less digits than its factorization.

221122222102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22767.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221122222102 its reverse (201222221122), we get a palindrome (422344443224).

The spelling of 221122222102 in words is "two hundred twenty-one billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred two".