11201220213131 has 16 divisors (see below), whose sum is σ = 12318711531168. Its totient is φ = 10121886835200.

The previous prime is 11201220213119. The next prime is 11201220213151. The reversal of 11201220213131 is 13131202210211.

It is a cyclic number.

It is not a de Polignac number, because 11201220213131 - 2¹⁰ = 11201220212107 is a prime.

It is a super-2 number, since 2×11201220213131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11201220213151) 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, 33304526 + ... + 33639171.

It is an arithmetic number, because the mean of its divisors is an integer number (769919470698).

Almost surely, 2^{11201220213131} is an apocalyptic number.

11201220213131 is a deficient number, since it is larger than the sum of its proper divisors (1117491318037).

11201220213131 is a wasteful number, since it uses less digits than its factorization.

11201220213131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66943982.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 11201220213131 its reverse (13131202210211), we get a palindrome (24332422423342).

The spelling of 11201220213131 in words is "eleven trillion, two hundred one billion, two hundred twenty million, two hundred thirteen thousand, one hundred thirty-one".