21222210123321 has 8 divisors (see below), whose sum is σ = 28330495742304. Its totient is φ = 14131032293280.

The previous prime is 21222210123319. The next prime is 21222210123479. The reversal of 21222210123321 is 12332101222212.

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

It is not a de Polignac number, because 21222210123321 - 2¹ = 21222210123319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21222210123291 and 21222210123300.

It is not an unprimeable number, because it can be changed into a prime (21222210133321) 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, 4276944340 + ... + 4276949301.

It is an arithmetic number, because the mean of its divisors is an integer number (3541311967788).

Almost surely, 2^{21222210123321} is an apocalyptic number.

It is an amenable number.

21222210123321 is a deficient number, since it is larger than the sum of its proper divisors (7108285618983).

21222210123321 is an equidigital number, since it uses as much as digits as its factorization.

21222210123321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8553894471.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 21222210123321 its reverse (12332101222212), we get a palindrome (33554311345533).

The spelling of 21222210123321 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred ten million, one hundred twenty-three thousand, three hundred twenty-one".