11321321213 has 4 divisors (see below), whose sum is σ = 11326352928. Its totient is φ = 11316289500.

The previous prime is 11321321159. The next prime is 11321321227. The reversal of 11321321213 is 31212312311.

It is a happy number.

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 11321321213 - 2¹⁶ = 11321255677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321321233) 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, 2512481 + ... + 2516982.

It is an arithmetic number, because the mean of its divisors is an integer number (2831588232).

Almost surely, 2^11321321213 is an apocalyptic number.

It is an amenable number.

11321321213 is a deficient number, since it is larger than the sum of its proper divisors (5031715).

11321321213 is an equidigital number, since it uses as much as digits as its factorization.

11321321213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5031714.

The product of its digits is 216, while the sum is 20.

Adding to 11321321213 its reverse (31212312311), we get a palindrome (42533633524).

The spelling of 11321321213 in words is "eleven billion, three hundred twenty-one million, three hundred twenty-one thousand, two hundred thirteen".