221101111212202 has 16 divisors (see below), whose sum is σ = 357180905233152. Its totient is φ = 102041646217200.

The previous prime is 221101111212151. The next prime is 221101111212227. The reversal of 221101111212202 is 202212111101122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 221101111212202.

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, 208648674 + ... + 209705677.

It is an arithmetic number, because the mean of its divisors is an integer number (22323806577072).

Almost surely, 2^{221101111212202} is an apocalyptic number.

221101111212202 is a deficient number, since it is larger than the sum of its proper divisors (136079794020950).

221101111212202 is a wasteful number, since it uses less digits than its factorization.

221101111212202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418374693.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 221101111212202 its reverse (202212111101122), we get a palindrome (423313222313324).

The spelling of 221101111212202 in words is "two hundred twenty-one trillion, one hundred one billion, one hundred eleven million, two hundred twelve thousand, two hundred two".