20102120122223 has 4 divisors (see below), whose sum is σ = 20356577339040. Its totient is φ = 19847662905408.

The previous prime is 20102120122177. The next prime is 20102120122241. The reversal of 20102120122223 is 32222102120102.

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

It is a cyclic number.

It is not a de Polignac number, because 20102120122223 - 2¹² = 20102120118127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20102120122195 and 20102120122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102120122723) 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, 127228608290 + ... + 127228608447.

It is an arithmetic number, because the mean of its divisors is an integer number (5089144334760).

Almost surely, 2^{20102120122223} is an apocalyptic number.

20102120122223 is a deficient number, since it is larger than the sum of its proper divisors (254457216817).

20102120122223 is an equidigital number, since it uses as much as digits as its factorization.

20102120122223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254457216816.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20102120122223 its reverse (32222102120102), we get a palindrome (52324222242325).

The spelling of 20102120122223 in words is "twenty trillion, one hundred two billion, one hundred twenty million, one hundred twenty-two thousand, two hundred twenty-three".