21222102121001 has 8 divisors (see below), whose sum is σ = 21240382855200. Its totient is φ = 21203822404800.

The previous prime is 21222102120983. The next prime is 21222102121057. The reversal of 21222102121001 is 10012120122212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21222102121001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21222102121091) 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, 44897270 + ... + 45367488.

It is an arithmetic number, because the mean of its divisors is an integer number (2655047856900).

Almost surely, 2^{21222102121001} is an apocalyptic number.

It is an amenable number.

21222102121001 is a deficient number, since it is larger than the sum of its proper divisors (18280734199).

21222102121001 is a wasteful number, since it uses less digits than its factorization.

21222102121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508999.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21222102121001 its reverse (10012120122212), we get a palindrome (31234222243213).

The spelling of 21222102121001 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred two million, one hundred twenty-one thousand, one".