21222332310221 has 8 divisors (see below), whose sum is σ = 24255912732480. Its totient is φ = 18189206553888.

The previous prime is 21222332310217. The next prime is 21222332310287. The reversal of 21222332310221 is 12201323322212.

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

It is a cyclic number.

It is not a de Polignac number, because 21222332310221 - 2² = 21222332310217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222332360221) 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, 113566451 + ... + 113753168.

It is an arithmetic number, because the mean of its divisors is an integer number (3031989091560).

Almost surely, 2^{21222332310221} is an apocalyptic number.

It is an amenable number.

21222332310221 is a deficient number, since it is larger than the sum of its proper divisors (3033580422259).

21222332310221 is a wasteful number, since it uses less digits than its factorization.

21222332310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227332963.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 21222332310221 its reverse (12201323322212), we get a palindrome (33423655632433).

The spelling of 21222332310221 in words is "twenty-one trillion, two hundred twenty-two billion, three hundred thirty-two million, three hundred ten thousand, two hundred twenty-one".