21222002210101 has 16 divisors (see below), whose sum is σ = 26660574217728. Its totient is φ = 16410391311600.

The previous prime is 21222002210093. The next prime is 21222002210159. The reversal of 21222002210101 is 10101220022212.

It is a happy number.

It is not a de Polignac number, because 21222002210101 - 2³ = 21222002210093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222002210161) 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 15 ways as a sum of consecutive naturals, for example, 1051938075 + ... + 1051958248.

It is an arithmetic number, because the mean of its divisors is an integer number (1666285888608).

Almost surely, 2^{21222002210101} is an apocalyptic number.

It is an amenable number.

21222002210101 is a deficient number, since it is larger than the sum of its proper divisors (5438572007627).

21222002210101 is a wasteful number, since it uses less digits than its factorization.

21222002210101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103896472.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21222002210101 its reverse (10101220022212), we get a palindrome (31323222232313).

The spelling of 21222002210101 in words is "twenty-one trillion, two hundred twenty-two billion, two million, two hundred ten thousand, one hundred one".