20314121240221 has 4 divisors (see below), whose sum is σ = 20314135048032. Its totient is φ = 20314107432412.

The previous prime is 20314121240201. The next prime is 20314121240243. The reversal of 20314121240221 is 12204212141302.

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 a de Polignac number, because none of the positive numbers 2^k-20314121240221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20314121240201) 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, 4392601 + ... + 7741006.

It is an arithmetic number, because the mean of its divisors is an integer number (5078533762008).

Almost surely, 2^{20314121240221} is an apocalyptic number.

It is an amenable number.

20314121240221 is a deficient number, since it is larger than the sum of its proper divisors (13807811).

20314121240221 is a wasteful number, since it uses less digits than its factorization.

20314121240221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13807810.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 20314121240221 its reverse (12204212141302), we get a palindrome (32518333381523).

The spelling of 20314121240221 in words is "twenty trillion, three hundred fourteen billion, one hundred twenty-one million, two hundred forty thousand, two hundred twenty-one".