11043434013221 has 4 divisors (see below), whose sum is σ = 11043889831500. Its totient is φ = 11042978194944.

The previous prime is 11043434013203. The next prime is 11043434013263. The reversal of 11043434013221 is 12231043434011.

11043434013221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7095622665121 + 3947811348100 = 2663761^2 + 1986910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11043434013221 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 (11043434003221) 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, 227872796 + ... + 227921253.

It is an arithmetic number, because the mean of its divisors is an integer number (2760972457875).

Almost surely, 2^{11043434013221} is an apocalyptic number.

It is an amenable number.

11043434013221 is a deficient number, since it is larger than the sum of its proper divisors (455818279).

11043434013221 is an equidigital number, since it uses as much as digits as its factorization.

11043434013221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455818278.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 11043434013221 its reverse (12231043434011), we get a palindrome (23274477447232).

The spelling of 11043434013221 in words is "eleven trillion, forty-three billion, four hundred thirty-four million, thirteen thousand, two hundred twenty-one".