20110022202121 has 4 divisors (see below), whose sum is σ = 20110858436500. Its totient is φ = 20109185967744.

The previous prime is 20110022202029. The next prime is 20110022202133. The reversal of 20110022202121 is 12120222001102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8516848436496 + 11593173765625 = 2918364^2 + 3404875^2 .

It is a cyclic number.

It is not a de Polignac number, because 20110022202121 - 2¹³ = 20110022193929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20110022202095 and 20110022202104.

It is not an unprimeable number, because it can be changed into a prime (20110022202161) 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, 418081116 + ... + 418129213.

It is an arithmetic number, because the mean of its divisors is an integer number (5027714609125).

Almost surely, 2^{20110022202121} is an apocalyptic number.

It is an amenable number.

20110022202121 is a deficient number, since it is larger than the sum of its proper divisors (836234379).

20110022202121 is an equidigital number, since it uses as much as digits as its factorization.

20110022202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836234378.

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

Adding to 20110022202121 its reverse (12120222001102), we get a palindrome (32230244203223).

The spelling of 20110022202121 in words is "twenty trillion, one hundred ten billion, twenty-two million, two hundred two thousand, one hundred twenty-one".