11211031112213 has 4 divisors (see below), whose sum is σ = 11218590811008. Its totient is φ = 11203471413420.

The previous prime is 11211031112147. The next prime is 11211031112243. The reversal of 11211031112213 is 31221113011211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11211031112213 - 2⁸ = 11211031111957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211031112243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3779847173 + ... + 3779850138.

It is an arithmetic number, because the mean of its divisors is an integer number (2804647702752).

Almost surely, 2^{11211031112213} is an apocalyptic number.

It is an amenable number.

11211031112213 is a deficient number, since it is larger than the sum of its proper divisors (7559698795).

11211031112213 is an equidigital number, since it uses as much as digits as its factorization.

11211031112213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7559698794.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 11211031112213 its reverse (31221113011211), we get a palindrome (42432144123424).

The spelling of 11211031112213 in words is "eleven trillion, two hundred eleven billion, thirty-one million, one hundred twelve thousand, two hundred thirteen".