11144223130421 has 4 divisors (see below), whose sum is σ = 11144288347500. Its totient is φ = 11144157913344.

The previous prime is 11144223130379. The next prime is 11144223130427. The reversal of 11144223130421 is 12403132244111.

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 5257339966321 + 5886883164100 = 2292889^2 + 2426290^2 .

It is a cyclic number.

It is not a de Polignac number, because 11144223130421 - 2⁴² = 6746176619317 is a prime.

It is a super-2 number, since 2×11144223130421² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11144223130427) 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, 32351546 + ... + 32694203.

It is an arithmetic number, because the mean of its divisors is an integer number (2786072086875).

Almost surely, 2^{11144223130421} is an apocalyptic number.

It is an amenable number.

11144223130421 is a deficient number, since it is larger than the sum of its proper divisors (65217079).

11144223130421 is an equidigital number, since it uses as much as digits as its factorization.

11144223130421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65217078.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 11144223130421 its reverse (12403132244111), we get a palindrome (23547355374532).

The spelling of 11144223130421 in words is "eleven trillion, one hundred forty-four billion, two hundred twenty-three million, one hundred thirty thousand, four hundred twenty-one".