20110022102221 has 8 divisors (see below), whose sum is σ = 20238236581784. Its totient is φ = 19981809207360.

The previous prime is 20110022102213. The next prime is 20110022102243. The reversal of 20110022102221 is 12220122001102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 54224245321 + 20055797856900 = 232861^2 + 4478370^2 .

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 20110022102221 - 2³ = 20110022102213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20110022102195 and 20110022102204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110022102021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35258911 + ... + 35824723.

It is an arithmetic number, because the mean of its divisors is an integer number (2529779572723).

Almost surely, 2^{20110022102221} is an apocalyptic number.

It is an amenable number.

20110022102221 is a deficient number, since it is larger than the sum of its proper divisors (128214479563).

20110022102221 is a wasteful number, since it uses less digits than its factorization.

20110022102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792351.

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

Adding to 20110022102221 its reverse (12220122001102), we get a palindrome (32330144103323).

The spelling of 20110022102221 in words is "twenty trillion, one hundred ten billion, twenty-two million, one hundred two thousand, two hundred twenty-one".