11121004413221 has 4 divisors (see below), whose sum is σ = 11169567751500. Its totient is φ = 11072441074944.

The previous prime is 11121004413163. The next prime is 11121004413223. The reversal of 11121004413221 is 12231440012111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7255400152225 + 3865604260996 = 2693585^2 + 1966114^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121004413221 - 2¹⁸ = 11121004151077 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 (11121004413223) 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, 24281668796 + ... + 24281669253.

It is an arithmetic number, because the mean of its divisors is an integer number (2792391937875).

Almost surely, 2^{11121004413221} is an apocalyptic number.

It is an amenable number.

11121004413221 is a deficient number, since it is larger than the sum of its proper divisors (48563338279).

11121004413221 is an equidigital number, since it uses as much as digits as its factorization.

11121004413221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48563338278.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 11121004413221 its reverse (12231440012111), we get a palindrome (23352444425332).

The spelling of 11121004413221 in words is "eleven trillion, one hundred twenty-one billion, four million, four hundred thirteen thousand, two hundred twenty-one".