11420030221 has 4 divisors (see below), whose sum is σ = 11425750812. Its totient is φ = 11414309632.

The previous prime is 11420030207. The next prime is 11420030231. The reversal of 11420030221 is 12203002411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12203002411 = 5003 ⋅2439137.

It can be written as a sum of positive squares in 2 ways, for example, as 313821225 + 11106208996 = 17715^2 + 105386^2 .

It is a cyclic number.

It is not a de Polignac number, because 11420030221 - 2¹¹ = 11420028173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11420030195 and 11420030204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11420030231) 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, 2857300 + ... + 2861293.

It is an arithmetic number, because the mean of its divisors is an integer number (2856437703).

Almost surely, 2^11420030221 is an apocalyptic number.

It is an amenable number.

11420030221 is a deficient number, since it is larger than the sum of its proper divisors (5720591).

11420030221 is an equidigital number, since it uses as much as digits as its factorization.

11420030221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5720590.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 11420030221 its reverse (12203002411), we get a palindrome (23623032632).

The spelling of 11420030221 in words is "eleven billion, four hundred twenty million, thirty thousand, two hundred twenty-one".