11010202222221 has 12 divisors (see below), whose sum is σ = 16333453146972. Its totient is φ = 7141752792576.

The previous prime is 11010202222213. The next prime is 11010202222241. The reversal of 11010202222221 is 12222220201011.

It is a happy number.

11010202222221 is a `hidden beast` number, since 1 + 10 + 10 + 202 + 222 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10691134272900 + 319067949321 = 3269730^2 + 564861^2 .

It is not a de Polignac number, because 11010202222221 - 2³ = 11010202222213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11010202222194 and 11010202222203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11010202222241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16531834836 + ... + 16531835501.

It is an arithmetic number, because the mean of its divisors is an integer number (1361121095581).

Almost surely, 2^{11010202222221} is an apocalyptic number.

It is an amenable number.

11010202222221 is a deficient number, since it is larger than the sum of its proper divisors (5323250924751).

11010202222221 is a wasteful number, since it uses less digits than its factorization.

11010202222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33063670380 (or 33063670377 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11010202222221 its reverse (12222220201011), we get a palindrome (23232422423232).

The spelling of 11010202222221 in words is "eleven trillion, ten billion, two hundred two million, two hundred twenty-two thousand, two hundred twenty-one".