21241211202321 has 32 divisors (see below), whose sum is σ = 31180642944000. Its totient is φ = 12754994806080.

The previous prime is 21241211202293. The next prime is 21241211202371. The reversal of 21241211202321 is 12320211214212.

It is not a de Polignac number, because 21241211202321 - 2¹⁹ = 21241210678033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21241211202291 and 21241211202300.

It is not an unprimeable number, because it can be changed into a prime (21241211202371) 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, 181946250 + ... + 182062956.

It is an arithmetic number, because the mean of its divisors is an integer number (974395092000).

Almost surely, 2^{21241211202321} is an apocalyptic number.

It is an amenable number.

21241211202321 is a deficient number, since it is larger than the sum of its proper divisors (9939431741679).

21241211202321 is a wasteful number, since it uses less digits than its factorization.

21241211202321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167429.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 21241211202321 its reverse (12320211214212), we get a palindrome (33561422416533).

The spelling of 21241211202321 in words is "twenty-one trillion, two hundred forty-one billion, two hundred eleven million, two hundred two thousand, three hundred twenty-one".