11120202211221 has 6 divisors (see below), whose sum is σ = 16062514305110. Its totient is φ = 7413468140808.

The previous prime is 11120202211219. The next prime is 11120202211271. The reversal of 11120202211221 is 12211220202111.

11120202211221 is a `hidden beast` number, since 1 + 11 + 20 + 202 + 211 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10128395360196 + 991806851025 = 3182514^2 + 995895^2 .

It is not a de Polignac number, because 11120202211221 - 2¹ = 11120202211219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11120202211194 and 11120202211203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11120202211271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 617789011726 + ... + 617789011743.

Almost surely, 2^{11120202211221} is an apocalyptic number.

It is an amenable number.

11120202211221 is a deficient number, since it is larger than the sum of its proper divisors (4942312093889).

11120202211221 is a wasteful number, since it uses less digits than its factorization.

11120202211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235578023475 (or 1235578023472 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11120202211221 its reverse (12211220202111), we get a palindrome (23331422413332).

The spelling of 11120202211221 in words is "eleven trillion, one hundred twenty billion, two hundred two million, two hundred eleven thousand, two hundred twenty-one".