20213120011223 has 16 divisors (see below), whose sum is σ = 20871727373952. Its totient is φ = 19563023232000.

The previous prime is 20213120011171. The next prime is 20213120011247. The reversal of 20213120011223 is 32211002131202.

It is a cyclic number.

It is not a de Polignac number, because 20213120011223 - 2¹⁰ = 20213120010199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20213120011195 and 20213120011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213129011223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1314998 + ... + 6492723.

It is an arithmetic number, because the mean of its divisors is an integer number (1304482960872).

Almost surely, 2^{20213120011223} is an apocalyptic number.

20213120011223 is a deficient number, since it is larger than the sum of its proper divisors (658607362729).

20213120011223 is a wasteful number, since it uses less digits than its factorization.

20213120011223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7808266.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20213120011223 its reverse (32211002131202), we get a palindrome (52424122142425).

The spelling of 20213120011223 in words is "twenty trillion, two hundred thirteen billion, one hundred twenty million, eleven thousand, two hundred twenty-three".