21440433330211 has 8 divisors (see below), whose sum is σ = 24511723891200. Its totient is φ = 18371235647688.

The previous prime is 21440433330181. The next prime is 21440433330223. The reversal of 21440433330211 is 11203333404412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21440433330211 - 2¹⁷ = 21440433199139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21440433330011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523197661 + ... + 523238638.

It is an arithmetic number, because the mean of its divisors is an integer number (3063965486400).

Almost surely, 2^{21440433330211} is an apocalyptic number.

21440433330211 is a deficient number, since it is larger than the sum of its proper divisors (3071290560989).

21440433330211 is a wasteful number, since it uses less digits than its factorization.

21440433330211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046439233.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 21440433330211 its reverse (11203333404412), we get a palindrome (32643766734623).

The spelling of 21440433330211 in words is "twenty-one trillion, four hundred forty billion, four hundred thirty-three million, three hundred thirty thousand, two hundred eleven".