11221131413 has 4 divisors (see below), whose sum is σ = 11221444128. Its totient is φ = 11220818700.

The previous prime is 11221131347. The next prime is 11221131421. The reversal of 11221131413 is 31413112211.

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 11221131413 - 2²⁴ = 11204354197 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 (11221131013) 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, 94331 + ... + 177032.

It is an arithmetic number, because the mean of its divisors is an integer number (2805361032).

Almost surely, 2^11221131413 is an apocalyptic number.

It is an amenable number.

11221131413 is a deficient number, since it is larger than the sum of its proper divisors (312715).

11221131413 is an equidigital number, since it uses as much as digits as its factorization.

11221131413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312714.

The product of its digits is 144, while the sum is 20.

Adding to 11221131413 its reverse (31413112211), we get a palindrome (42634243624).

The spelling of 11221131413 in words is "eleven billion, two hundred twenty-one million, one hundred thirty-one thousand, four hundred thirteen".