21122333020221 has 8 divisors (see below), whose sum is σ = 29387593767360. Its totient is φ = 13469313809952.

The previous prime is 21122333020219. The next prime is 21122333020277. The reversal of 21122333020221 is 12202033322112.

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

It is not a de Polignac number, because 21122333020221 - 2¹ = 21122333020219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21122333020191 and 21122333020200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122333020121) 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, 153060384136 + ... + 153060384273.

It is an arithmetic number, because the mean of its divisors is an integer number (3673449220920).

Almost surely, 2^{21122333020221} is an apocalyptic number.

It is an amenable number.

21122333020221 is a deficient number, since it is larger than the sum of its proper divisors (8265260747139).

21122333020221 is a wasteful number, since it uses less digits than its factorization.

21122333020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306120768435.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21122333020221 its reverse (12202033322112), we get a palindrome (33324366342333).

The spelling of 21122333020221 in words is "twenty-one trillion, one hundred twenty-two billion, three hundred thirty-three million, twenty thousand, two hundred twenty-one".