11020222111221 has 6 divisors (see below), whose sum is σ = 15918098605110. Its totient is φ = 7346814740808.

The previous prime is 11020222111169. The next prime is 11020222111231. The reversal of 11020222111221 is 12211122202011.

11020222111221 is a `hidden beast` number, since 1 + 10 + 202 + 221 + 11 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8811101722500 + 2209120388721 = 2968350^2 + 1486311^2 .

It is not a de Polignac number, because 11020222111221 - 2²⁵ = 11020188556789 is a prime.

It is a super-2 number, since 2×11020222111221² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11020222111194 and 11020222111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020222111231) 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 5 ways as a sum of consecutive naturals, for example, 612234561726 + ... + 612234561743.

It is an arithmetic number, because the mean of its divisors is an integer number (2653016434185).

Almost surely, 2^{11020222111221} is an apocalyptic number.

It is an amenable number.

11020222111221 is a deficient number, since it is larger than the sum of its proper divisors (4897876493889).

11020222111221 is a wasteful number, since it uses less digits than its factorization.

11020222111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224469123475 (or 1224469123472 counting only the distinct ones).

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

Adding to 11020222111221 its reverse (12211122202011), we get a palindrome (23231344313232).

The spelling of 11020222111221 in words is "eleven trillion, twenty billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twenty-one".