11333221213 has 4 divisors (see below), whose sum is σ = 11929706560. Its totient is φ = 10736735868.

The previous prime is 11333221153. The next prime is 11333221217. The reversal of 11333221213 is 31212233311.

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 11333221213 - 2³³ = 2743286621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11333221217) 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, 298242645 + ... + 298242682.

It is an arithmetic number, because the mean of its divisors is an integer number (2982426640).

Almost surely, 2^11333221213 is an apocalyptic number.

It is an amenable number.

11333221213 is a deficient number, since it is larger than the sum of its proper divisors (596485347).

11333221213 is an equidigital number, since it uses as much as digits as its factorization.

11333221213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596485346.

The product of its digits is 648, while the sum is 22.

Adding to 11333221213 its reverse (31212233311), we get a palindrome (42545454524).

The spelling of 11333221213 in words is "eleven billion, three hundred thirty-three million, two hundred twenty-one thousand, two hundred thirteen".