11211213231213 has 32 divisors (see below), whose sum is σ = 16136532253440. Its totient is φ = 6902462138880.

The previous prime is 11211213231209. The next prime is 11211213231217. The reversal of 11211213231213 is 31213231211211.

It is an interprime number because it is at equal distance from previous prime (11211213231209) and next prime (11211213231217).

It is not a de Polignac number, because 11211213231213 - 2² = 11211213231209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211213231217) 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 31 ways as a sum of consecutive naturals, for example, 108844945 + ... + 108947897.

It is an arithmetic number, because the mean of its divisors is an integer number (504266632920).

Almost surely, 2^{11211213231213} is an apocalyptic number.

It is an amenable number.

11211213231213 is a deficient number, since it is larger than the sum of its proper divisors (4925319022227).

11211213231213 is a wasteful number, since it uses less digits than its factorization.

11211213231213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157429.

The product of its digits is 432, while the sum is 24.

Adding to 11211213231213 its reverse (31213231211211), we get a palindrome (42424444442424).

The spelling of 11211213231213 in words is "eleven trillion, two hundred eleven billion, two hundred thirteen million, two hundred thirty-one thousand, two hundred thirteen".