11213031211 has 4 divisors (see below), whose sum is σ = 11324051424. Its totient is φ = 11102011000.

The previous prime is 11213031199. The next prime is 11213031223.

It is a happy number.

11213031211 is nontrivially palindromic in base 10.

11213031211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (11213031199) and next prime (11213031223).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11213031211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11213031281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55509955 + ... + 55510156.

It is an arithmetic number, because the mean of its divisors is an integer number (2831012856).

Almost surely, 2^11213031211 is an apocalyptic number.

11213031211 is a deficient number, since it is larger than the sum of its proper divisors (111020213).

11213031211 is a wasteful number, since it uses less digits than its factorization.

11213031211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111020212.

The product of its (nonzero) digits is 36, while the sum is 16.

It can be divided in two parts, 112130 and 31211, that added together give a palindrome (143341).

The spelling of 11213031211 in words is "eleven billion, two hundred thirteen million, thirty-one thousand, two hundred eleven".