20013221023223 has 16 divisors (see below), whose sum is σ = 20254198970880. Its totient is φ = 19773705067200.

The previous prime is 20013221023183. The next prime is 20013221023259. The reversal of 20013221023223 is 32232012231002.

It is a cyclic number.

It is not a de Polignac number, because 20013221023223 - 2³² = 20008926055927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013221025223) 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, 63068468 + ... + 63384998.

It is an arithmetic number, because the mean of its divisors is an integer number (1265887435680).

Almost surely, 2^{20013221023223} is an apocalyptic number.

20013221023223 is a deficient number, since it is larger than the sum of its proper divisors (240977947657).

20013221023223 is a wasteful number, since it uses less digits than its factorization.

20013221023223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318838.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20013221023223 its reverse (32232012231002), we get a palindrome (52245233254225).

The spelling of 20013221023223 in words is "twenty trillion, thirteen billion, two hundred twenty-one million, twenty-three thousand, two hundred twenty-three".