11121003213 has 4 divisors (see below), whose sum is σ = 14828004288. Its totient is φ = 7414002140.

The previous prime is 11121003211. The next prime is 11121003227. The reversal of 11121003213 is 31230012111.

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 11121003213 - 2¹ = 11121003211 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11121003192 and 11121003201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121003211) 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, 1853500533 + ... + 1853500538.

It is an arithmetic number, because the mean of its divisors is an integer number (3707001072).

Almost surely, 2^11121003213 is an apocalyptic number.

It is an amenable number.

11121003213 is a deficient number, since it is larger than the sum of its proper divisors (3707001075).

11121003213 is an equidigital number, since it uses as much as digits as its factorization.

11121003213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3707001074.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11121003213 its reverse (31230012111), we get a palindrome (42351015324).

The spelling of 11121003213 in words is "eleven billion, one hundred twenty-one million, three thousand, two hundred thirteen".