11201221210011 has 16 divisors (see below), whose sum is σ = 17068653967104. Its totient is φ = 6400650430944.

The previous prime is 11201221209977. The next prime is 11201221210019. The reversal of 11201221210011 is 11001212210211.

It is a happy number.

It is not a de Polignac number, because 11201221210011 - 2²¹ = 11201219112859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11201221210019) 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, 1034581 + ... + 4844873.

It is an arithmetic number, because the mean of its divisors is an integer number (1066790872944).

Almost surely, 2^{11201221210011} is an apocalyptic number.

11201221210011 is a deficient number, since it is larger than the sum of its proper divisors (5867432757093).

11201221210011 is a wasteful number, since it uses less digits than its factorization.

11201221210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3950290.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11201221210011 its reverse (11001212210211), we get a palindrome (22202433420222).

The spelling of 11201221210011 in words is "eleven trillion, two hundred one billion, two hundred twenty-one million, two hundred ten thousand, eleven".