20413104121 has 4 divisors (see below), whose sum is σ = 20417497744. Its totient is φ = 20408710500.

The previous prime is 20413104113. The next prime is 20413104133. The reversal of 20413104121 is 12140131402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20413104121 - 2³ = 20413104113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20413104191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2189835 + ... + 2199136.

It is an arithmetic number, because the mean of its divisors is an integer number (5104374436).

Almost surely, 2^20413104121 is an apocalyptic number.

It is an amenable number.

20413104121 is a deficient number, since it is larger than the sum of its proper divisors (4393623).

20413104121 is an equidigital number, since it uses as much as digits as its factorization.

20413104121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4393622.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20413104121 its reverse (12140131402), we get a palindrome (32553235523).

The spelling of 20413104121 in words is "twenty billion, four hundred thirteen million, one hundred four thousand, one hundred twenty-one".