11144422121221 has 8 divisors (see below), whose sum is σ = 11629129653504. Its totient is φ = 10659728542320.

The previous prime is 11144422121201. The next prime is 11144422121251. The reversal of 11144422121221 is 12212122444111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11144422121221 - 2³³ = 11135832186629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11144422121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11144422121201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1839645 + ... + 5066866.

It is an arithmetic number, because the mean of its divisors is an integer number (1453641206688).

Almost surely, 2^{11144422121221} is an apocalyptic number.

It is an amenable number.

11144422121221 is a deficient number, since it is larger than the sum of its proper divisors (484707532283).

11144422121221 is an equidigital number, since it uses as much as digits as its factorization.

11144422121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6976691.

The product of its digits is 2048, while the sum is 28.

Adding to 11144422121221 its reverse (12212122444111), we get a palindrome (23356544565332).

The spelling of 11144422121221 in words is "eleven trillion, one hundred forty-four billion, four hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-one".