21222120122101 has 8 divisors (see below), whose sum is σ = 21679185185280. Its totient is φ = 20765285500368.

The previous prime is 21222120122083. The next prime is 21222120122129. The reversal of 21222120122101 is 10122102122212.

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 21222120122101 - 2¹¹ = 21222120120053 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 (21222120129101) 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, 57424186 + ... + 57792571.

It is an arithmetic number, because the mean of its divisors is an integer number (2709898148160).

Almost surely, 2^{21222120122101} is an apocalyptic number.

It is an amenable number.

21222120122101 is a deficient number, since it is larger than the sum of its proper divisors (457065063179).

21222120122101 is a wasteful number, since it uses less digits than its factorization.

21222120122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115220723.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21222120122101 its reverse (10122102122212), we get a palindrome (31344222244313).

The spelling of 21222120122101 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred twenty million, one hundred twenty-two thousand, one hundred one".