21222210100101 has 8 divisors (see below), whose sum is σ = 28299838998144. Its totient is φ = 14146360634400.

The previous prime is 21222210100087. The next prime is 21222210100151. The reversal of 21222210100101 is 10100101222212.

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

It is not a de Polignac number, because 21222210100101 - 2⁹ = 21222210099589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222210100151) 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, 444830256 + ... + 444877961.

It is an arithmetic number, because the mean of its divisors is an integer number (3537479874768).

Almost surely, 2^{21222210100101} is an apocalyptic number.

It is an amenable number.

21222210100101 is a deficient number, since it is larger than the sum of its proper divisors (7077628898043).

21222210100101 is an equidigital number, since it uses as much as digits as its factorization.

21222210100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889716171.

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

Adding to 21222210100101 its reverse (10100101222212), we get a palindrome (31322311322313).

The spelling of 21222210100101 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred ten million, one hundred thousand, one hundred one".