11001201202111 has 4 divisors (see below), whose sum is σ = 11045030689224. Its totient is φ = 10957371715000.

The previous prime is 11001201202063. The next prime is 11001201202171. The reversal of 11001201202111 is 11120210210011.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11001201202111 is a prime.

It is a super-2 number, since 2×11001201202111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11001201202091 and 11001201202100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001201202171) 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, 21914743180 + ... + 21914743681.

It is an arithmetic number, because the mean of its divisors is an integer number (2761257672306).

Almost surely, 2^{11001201202111} is an apocalyptic number.

11001201202111 is a deficient number, since it is larger than the sum of its proper divisors (43829487113).

11001201202111 is an equidigital number, since it uses as much as digits as its factorization.

11001201202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43829487112.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11001201202111 its reverse (11120210210011), we get a palindrome (22121411412122).

The spelling of 11001201202111 in words is "eleven trillion, one billion, two hundred one million, two hundred two thousand, one hundred eleven".