22020100221121 has 4 divisors (see below), whose sum is σ = 22036948042032. Its totient is φ = 22003252400212.

The previous prime is 22020100221089. The next prime is 22020100221181. The reversal of 22020100221121 is 12112200102022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22020100221121 - 2⁵ = 22020100221089 is a prime.

It is a super-2 number, since 2×22020100221121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22020100221095 and 22020100221104.

It is not an unprimeable number, because it can be changed into a prime (22020100221181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8423908495 + ... + 8423911108.

It is an arithmetic number, because the mean of its divisors is an integer number (5509237010508).

Almost surely, 2^{22020100221121} is an apocalyptic number.

It is an amenable number.

22020100221121 is a deficient number, since it is larger than the sum of its proper divisors (16847820911).

22020100221121 is a wasteful number, since it uses less digits than its factorization.

22020100221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16847820910.

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

Adding to 22020100221121 its reverse (12112200102022), we get a palindrome (34132300323143).

The spelling of 22020100221121 in words is "twenty-two trillion, twenty billion, one hundred million, two hundred twenty-one thousand, one hundred twenty-one".