11010222221 has 4 divisors (see below), whose sum is σ = 11023832700. Its totient is φ = 10996611744.

The previous prime is 11010222203. The next prime is 11010222247. The reversal of 11010222221 is 12222201011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12222201011 = 61 ⋅200363951.

It can be written as a sum of positive squares in 2 ways, for example, as 6292455625 + 4717766596 = 79325^2 + 68686^2 .

It is a cyclic number.

It is not a de Polignac number, because 11010222221 - 2¹⁰ = 11010221197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11010222196 and 11010222205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11010222271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6804026 + ... + 6805643.

It is an arithmetic number, because the mean of its divisors is an integer number (2755958175).

Almost surely, 2^11010222221 is an apocalyptic number.

It is an amenable number.

11010222221 is a deficient number, since it is larger than the sum of its proper divisors (13610479).

11010222221 is an equidigital number, since it uses as much as digits as its factorization.

11010222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13610478.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11010222221 its reverse (12222201011), we get a palindrome (23232423232).

The spelling of 11010222221 in words is "eleven billion, ten million, two hundred twenty-two thousand, two hundred twenty-one".