11331213213 has 8 divisors (see below), whose sum is σ = 15109177248. Its totient is φ = 7553695664.

The previous prime is 11331213209. The next prime is 11331213233. The reversal of 11331213213 is 31231213311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11331213213 - 2² = 11331213209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11331213213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331213233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47070 + ... + 157727.

It is an arithmetic number, because the mean of its divisors is an integer number (1888647156).

Almost surely, 2^11331213213 is an apocalyptic number.

It is an amenable number.

11331213213 is a deficient number, since it is larger than the sum of its proper divisors (3777964035).

11331213213 is a wasteful number, since it uses less digits than its factorization.

11331213213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223243.

The product of its digits is 324, while the sum is 21.

Adding to 11331213213 its reverse (31231213311), we get a palindrome (42562426524).

The spelling of 11331213213 in words is "eleven billion, three hundred thirty-one million, two hundred thirteen thousand, two hundred thirteen".