21420343130241 has 32 divisors (see below), whose sum is σ = 32842955980800. Its totient is φ = 12281414719680.

The previous prime is 21420343130239. The next prime is 21420343130287. The reversal of 21420343130241 is 14203134302412.

It is not a de Polignac number, because 21420343130241 - 2¹ = 21420343130239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21420343130199 and 21420343130208.

It is not an unprimeable number, because it can be changed into a prime (21420343130231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23648001 + ... + 24537086.

It is an arithmetic number, because the mean of its divisors is an integer number (1026342374400).

Almost surely, 2^{21420343130241} is an apocalyptic number.

It is an amenable number.

21420343130241 is a deficient number, since it is larger than the sum of its proper divisors (11422612850559).

21420343130241 is a wasteful number, since it uses less digits than its factorization.

21420343130241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48185829.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 21420343130241 its reverse (14203134302412), we get a palindrome (35623477432653).

The spelling of 21420343130241 in words is "twenty-one trillion, four hundred twenty billion, three hundred forty-three million, one hundred thirty thousand, two hundred forty-one".