20124253223 has 4 divisors (see below), whose sum is σ = 20503956168. Its totient is φ = 19744550280.

The previous prime is 20124253211. The next prime is 20124253267. The reversal of 20124253223 is 32235242102.

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 20124253223 - 2⁴ = 20124253207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20124253192 and 20124253201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20124258223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189851393 + ... + 189851498.

It is an arithmetic number, because the mean of its divisors is an integer number (5125989042).

Almost surely, 2^20124253223 is an apocalyptic number.

20124253223 is a deficient number, since it is larger than the sum of its proper divisors (379702945).

20124253223 is an equidigital number, since it uses as much as digits as its factorization.

20124253223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379702944.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 20124253223 its reverse (32235242102), we get a palindrome (52359495325).

The spelling of 20124253223 in words is "twenty billion, one hundred twenty-four million, two hundred fifty-three thousand, two hundred twenty-three".