21222102101001 has 8 divisors (see below), whose sum is σ = 28297223840544. Its totient is φ = 14147524214400.

The previous prime is 21222102100967. The next prime is 21222102101089. The reversal of 21222102101001 is 10010120122212.

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

It is not a de Polignac number, because 21222102101001 - 2⁶ = 21222102100937 is a prime.

It is a super-2 number, since 2×21222102101001² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21222102103001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135872175 + ... + 136028276.

It is an arithmetic number, because the mean of its divisors is an integer number (3537152980068).

Almost surely, 2^{21222102101001} is an apocalyptic number.

It is an amenable number.

21222102101001 is a deficient number, since it is larger than the sum of its proper divisors (7075121739543).

21222102101001 is a wasteful number, since it uses less digits than its factorization.

21222102101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271926471.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21222102101001 its reverse (10010120122212), we get a palindrome (31232222223213).

The spelling of 21222102101001 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred two million, one hundred one thousand, one".