21144331134241 has 32 divisors (see below), whose sum is σ = 25263541739520. Its totient is φ = 17302776676416.

The previous prime is 21144331134209. The next prime is 21144331134253. The reversal of 21144331134241 is 14243113344112.

It is not a de Polignac number, because 21144331134241 - 2⁵ = 21144331134209 is a prime.

It is a super-2 number, since 2×21144331134241² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21144331134197 and 21144331134206.

It is not an unprimeable number, because it can be changed into a prime (21144331134841) 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 31 ways as a sum of consecutive naturals, for example, 551807215 + ... + 551845531.

It is an arithmetic number, because the mean of its divisors is an integer number (789485679360).

Almost surely, 2^{21144331134241} is an apocalyptic number.

It is an amenable number.

21144331134241 is a deficient number, since it is larger than the sum of its proper divisors (4119210605279).

21144331134241 is a wasteful number, since it uses less digits than its factorization.

21144331134241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44773.

The product of its digits is 27648, while the sum is 34.

Adding to 21144331134241 its reverse (14243113344112), we get a palindrome (35387444478353).

The spelling of 21144331134241 in words is "twenty-one trillion, one hundred forty-four billion, three hundred thirty-one million, one hundred thirty-four thousand, two hundred forty-one".