21230352560441 has 4 divisors (see below), whose sum is σ = 21230535805584. Its totient is φ = 21230169315300.

The previous prime is 21230352560357. The next prime is 21230352560489. The reversal of 21230352560441 is 14406525303212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21230352560441 - 2²² = 21230348366137 is a prime.

It is a super-2 number, since 2×21230352560441² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21230352560395 and 21230352560404.

It is not an unprimeable number, because it can be changed into a prime (21230352560041) 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, 91448675 + ... + 91680536.

It is an arithmetic number, because the mean of its divisors is an integer number (5307633951396).

Almost surely, 2^{21230352560441} is an apocalyptic number.

It is an amenable number.

21230352560441 is a deficient number, since it is larger than the sum of its proper divisors (183245143).

21230352560441 is a wasteful number, since it uses less digits than its factorization.

21230352560441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183245142.

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 21230352560441 its reverse (14406525303212), we get a palindrome (35636877863653).

The spelling of 21230352560441 in words is "twenty-one trillion, two hundred thirty billion, three hundred fifty-two million, five hundred sixty thousand, four hundred forty-one".