11403314221 has 4 divisors (see below), whose sum is σ = 12280492252. Its totient is φ = 10526136192.

The previous prime is 11403314191. The next prime is 11403314239. The reversal of 11403314221 is 12241330411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12241330411 = 23 ⋅532231757.

It can be written as a sum of positive squares in 2 ways, for example, as 444155625 + 10959158596 = 21075^2 + 104686^2 .

It is not a de Polignac number, because 11403314221 - 2¹⁵ = 11403281453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11403314192 and 11403314201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11403314261) 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, 438588996 + ... + 438589021.

It is an arithmetic number, because the mean of its divisors is an integer number (3070123063).

Almost surely, 2^11403314221 is an apocalyptic number.

It is an amenable number.

11403314221 is a deficient number, since it is larger than the sum of its proper divisors (877178031).

11403314221 is an equidigital number, since it uses as much as digits as its factorization.

11403314221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877178030.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 11403314221 its reverse (12241330411), we get a palindrome (23644644632).

The spelling of 11403314221 in words is "eleven billion, four hundred three million, three hundred fourteen thousand, two hundred twenty-one".