21334244413121 has 16 divisors (see below), whose sum is σ = 22643531659008. Its totient is φ = 20031001939200.

The previous prime is 21334244413103. The next prime is 21334244413177. The reversal of 21334244413121 is 12131444243312.

It is a cyclic number.

It is not a de Polignac number, because 21334244413121 - 2¹⁰ = 21334244412097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21334244413721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90832766 + ... + 91067336.

It is an arithmetic number, because the mean of its divisors is an integer number (1415220728688).

Almost surely, 2^{21334244413121} is an apocalyptic number.

It is an amenable number.

21334244413121 is a deficient number, since it is larger than the sum of its proper divisors (1309287245887).

21334244413121 is a wasteful number, since it uses less digits than its factorization.

21334244413121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247432.

The product of its digits is 55296, while the sum is 35.

Adding to 21334244413121 its reverse (12131444243312), we get a palindrome (33465688656433).

The spelling of 21334244413121 in words is "twenty-one trillion, three hundred thirty-four billion, two hundred forty-four million, four hundred thirteen thousand, one hundred twenty-one".