11111222020201 has 4 divisors (see below), whose sum is σ = 11112112854612. Its totient is φ = 11110331185792.

The previous prime is 11111222020189. The next prime is 11111222020247. The reversal of 11111222020201 is 10202022211111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6094361192976 + 5016860827225 = 2468676^2 + 2239835^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111222020201 - 2³⁵ = 11076862281833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111222021201) 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, 445398496 + ... + 445423441.

It is an arithmetic number, because the mean of its divisors is an integer number (2778028213653).

Almost surely, 2^{11111222020201} is an apocalyptic number.

It is an amenable number.

11111222020201 is a deficient number, since it is larger than the sum of its proper divisors (890834411).

11111222020201 is an equidigital number, since it uses as much as digits as its factorization.

11111222020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890834410.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11111222020201 its reverse (10202022211111), we get a palindrome (21313244231312).

The spelling of 11111222020201 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-two million, twenty thousand, two hundred one".