20012423223 has 32 divisors (see below), whose sum is σ = 29300564160. Its totient is φ = 12073651200.

The previous prime is 20012423191. The next prime is 20012423237. The reversal of 20012423223 is 32232421002.

It is not a de Polignac number, because 20012423223 - 2⁵ = 20012423191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20012423223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012423243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3446923 + ... + 3452723.

It is an arithmetic number, because the mean of its divisors is an integer number (915642630).

Almost surely, 2^20012423223 is an apocalyptic number.

20012423223 is a deficient number, since it is larger than the sum of its proper divisors (9288140937).

20012423223 is a wasteful number, since it uses less digits than its factorization.

20012423223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7539.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20012423223 its reverse (32232421002), we get a palindrome (52244844225).

The spelling of 20012423223 in words is "twenty billion, twelve million, four hundred twenty-three thousand, two hundred twenty-three".