11211013012321 has 4 divisors (see below), whose sum is σ = 11211023570944. Its totient is φ = 11211002453700.

The previous prime is 11211013012319. The next prime is 11211013012357. The reversal of 11211013012321 is 12321031011211.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11211013012321 - 2¹ = 11211013012319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211013012621) 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, 3482865 + ... + 5878126.

It is an arithmetic number, because the mean of its divisors is an integer number (2802755892736).

Almost surely, 2^{11211013012321} is an apocalyptic number.

It is an amenable number.

11211013012321 is a deficient number, since it is larger than the sum of its proper divisors (10558623).

11211013012321 is an equidigital number, since it uses as much as digits as its factorization.

11211013012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10558622.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 11211013012321 its reverse (12321031011211), we get a palindrome (23532044023532).

The spelling of 11211013012321 in words is "eleven trillion, two hundred eleven billion, thirteen million, twelve thousand, three hundred twenty-one".