11313122221 has 8 divisors (see below), whose sum is σ = 11470030784. Its totient is φ = 11156266080.

The previous prime is 11313122213. The next prime is 11313122239. The reversal of 11313122221 is 12222131311.

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 11313122221 - 2³ = 11313122213 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 (11313122201) 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, 655120 + ... + 672166.

It is an arithmetic number, because the mean of its divisors is an integer number (1433753848).

Almost surely, 2^11313122221 is an apocalyptic number.

It is an amenable number.

11313122221 is a deficient number, since it is larger than the sum of its proper divisors (156908563).

11313122221 is an equidigital number, since it uses as much as digits as its factorization.

11313122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26211.

The product of its digits is 144, while the sum is 19.

Adding to 11313122221 its reverse (12222131311), we get a palindrome (23535253532).

The spelling of 11313122221 in words is "eleven billion, three hundred thirteen million, one hundred twenty-two thousand, two hundred twenty-one".