21222222201101 has 8 divisors (see below), whose sum is σ = 21238714998624. Its totient is φ = 21205735802640.

The previous prime is 21222222201083. The next prime is 21222222201149. The reversal of 21222222201101 is 10110222222212.

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 21222222201101 - 2¹⁰ = 21222222200077 is a prime.

It is a super-2 number, since 2×21222222201101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222222251101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5046446 + ... + 8240816.

It is an arithmetic number, because the mean of its divisors is an integer number (2654839374828).

Almost surely, 2^{21222222201101} is an apocalyptic number.

It is an amenable number.

21222222201101 is a deficient number, since it is larger than the sum of its proper divisors (16492797523).

21222222201101 is a wasteful number, since it uses less digits than its factorization.

21222222201101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3199531.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21222222201101 its reverse (10110222222212), we get a palindrome (31332444423313).

The spelling of 21222222201101 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred one thousand, one hundred one".