20123323201 has 4 divisors (see below), whose sum is σ = 20614136004. Its totient is φ = 19632510400.

The previous prime is 20123323133. The next prime is 20123323219. The reversal of 20123323201 is 10232332102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7327188801 + 12796134400 = 85599^2 + 113120^2 .

It is a cyclic number.

It is not a de Polignac number, because 20123323201 - 2⁹ = 20123322689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123323261) 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 3 ways as a sum of consecutive naturals, for example, 245406340 + ... + 245406421.

It is an arithmetic number, because the mean of its divisors is an integer number (5153534001).

Almost surely, 2^20123323201 is an apocalyptic number.

It is an amenable number.

20123323201 is a deficient number, since it is larger than the sum of its proper divisors (490812803).

20123323201 is an equidigital number, since it uses as much as digits as its factorization.

20123323201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490812802.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20123323201 its reverse (10232332102), we get a palindrome (30355655303).

The spelling of 20123323201 in words is "twenty billion, one hundred twenty-three million, three hundred twenty-three thousand, two hundred one".