11131212201101 has 4 divisors (see below), whose sum is σ = 11131225506492. Its totient is φ = 11131198895712.

The previous prime is 11131212201089. The next prime is 11131212201127. The reversal of 11131212201101 is 10110221213111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4890953402500 + 6240258798601 = 2211550^2 + 2498051^2 .

It is a cyclic number.

It is not a de Polignac number, because 11131212201101 - 2¹⁰ = 11131212200077 is a prime.

It is a super-2 number, since 2×11131212201101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11131212201101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131212201301) 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, 5307080 + ... + 7101233.

It is an arithmetic number, because the mean of its divisors is an integer number (2782806376623).

Almost surely, 2^{11131212201101} is an apocalyptic number.

It is an amenable number.

11131212201101 is a deficient number, since it is larger than the sum of its proper divisors (13305391).

11131212201101 is an equidigital number, since it uses as much as digits as its factorization.

11131212201101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13305390.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 11131212201101 its reverse (10110221213111), we get a palindrome (21241433414212).

The spelling of 11131212201101 in words is "eleven trillion, one hundred thirty-one billion, two hundred twelve million, two hundred one thousand, one hundred one".