20314311221 has 4 divisors (see below), whose sum is σ = 20316213600. Its totient is φ = 20312408844.

The previous prime is 20314311203. The next prime is 20314311247. The reversal of 20314311221 is 12211341302.

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 20314311221 - 2¹⁰ = 20314310197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20314311193 and 20314311202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20314311271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 935081 + ... + 956558.

It is an arithmetic number, because the mean of its divisors is an integer number (5079053400).

Almost surely, 2^20314311221 is an apocalyptic number.

It is an amenable number.

20314311221 is a deficient number, since it is larger than the sum of its proper divisors (1902379).

20314311221 is a wasteful number, since it uses less digits than its factorization.

20314311221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902378.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20314311221 its reverse (12211341302), we get a palindrome (32525652523).

The spelling of 20314311221 in words is "twenty billion, three hundred fourteen million, three hundred eleven thousand, two hundred twenty-one".