11201212211011 has 4 divisors (see below), whose sum is σ = 11201235259552. Its totient is φ = 11201189162472.

The previous prime is 11201212210973. The next prime is 11201212211081. The reversal of 11201212211011 is 11011221210211.

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

It is a cyclic number.

It is not a de Polignac number, because 11201212211011 - 2²⁵ = 11201178656579 is a prime.

It is a super-2 number, since 2×11201212211011² (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 (11201212211081) 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, 10779240 + ... + 11772613.

It is an arithmetic number, because the mean of its divisors is an integer number (2800308814888).

Almost surely, 2^{11201212211011} is an apocalyptic number.

11201212211011 is a deficient number, since it is larger than the sum of its proper divisors (23048541).

11201212211011 is an equidigital number, since it uses as much as digits as its factorization.

11201212211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23048540.

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

Adding to 11201212211011 its reverse (11011221210211), we get a palindrome (22212433421222).

It can be divided in two parts, 11201 and 212211011, that added together give a palindrome (212222212).

The spelling of 11201212211011 in words is "eleven trillion, two hundred one billion, two hundred twelve million, two hundred eleven thousand, eleven".