11201222020201 has 16 divisors (see below), whose sum is σ = 12110341072464. Its totient is φ = 10322013855744.

The previous prime is 11201222020187. The next prime is 11201222020213. The reversal of 11201222020201 is 10202022210211.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 5639859801 + 11195582160400 = 75099^2 + 3345980^2 .

It is not a de Polignac number, because 11201222020201 - 2¹⁹ = 11201221495913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11201222027201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32771460 + ... + 33111493.

It is an arithmetic number, because the mean of its divisors is an integer number (756896317029).

Almost surely, 2^{11201222020201} is an apocalyptic number.

It is an amenable number.

11201222020201 is a deficient number, since it is larger than the sum of its proper divisors (909119052263).

11201222020201 is a wasteful number, since it uses less digits than its factorization.

11201222020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65883180.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11201222020201 its reverse (10202022210211), we get a palindrome (21403244230412).

The spelling of 11201222020201 in words is "eleven trillion, two hundred one billion, two hundred twenty-two million, twenty thousand, two hundred one".