20323130121 has 20 divisors (see below), whose sum is σ = 34696279552. Its totient is φ = 11613216888.

The previous prime is 20323130083. The next prime is 20323130137. The reversal of 20323130121 is 12103132302.

20323130121 is a `hidden beast` number, since 20 + 323 + 1 + 301 + 21 = 666.

It is not a de Polignac number, because 20323130121 - 2⁹ = 20323129609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20323130094 and 20323130103.

It is not an unprimeable number, because it can be changed into a prime (20323130161) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17921065 + ... + 17922198.

Almost surely, 2^20323130121 is an apocalyptic number.

20323130121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20323130121 is a deficient number, since it is larger than the sum of its proper divisors (14373149431).

20323130121 is an equidigital number, since it uses as much as digits as its factorization.

20323130121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35843282 (or 35843273 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20323130121 its reverse (12103132302), we get a palindrome (32426262423).

The spelling of 20323130121 in words is "twenty billion, three hundred twenty-three million, one hundred thirty thousand, one hundred twenty-one".