20214210305 has 4 divisors (see below), whose sum is σ = 24257052372. Its totient is φ = 16171368240.

The previous prime is 20214210301. The next prime is 20214210323. The reversal of 20214210305 is 50301241202.

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 4861017841 + 15353192464 = 69721^2 + 123908^2 .

It is not a de Polignac number, because 20214210305 - 2² = 20214210301 is a prime.

It is a super-2 number, since 2×20214210305² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20214210301) 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, 2021421026 + ... + 2021421035.

It is an arithmetic number, because the mean of its divisors is an integer number (6064263093).

Almost surely, 2^20214210305 is an apocalyptic number.

It is an amenable number.

20214210305 is a deficient number, since it is larger than the sum of its proper divisors (4042842067).

20214210305 is an equidigital number, since it uses as much as digits as its factorization.

20214210305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4042842066.

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 20214210305 its reverse (50301241202), we get a palindrome (70515451507).

The spelling of 20214210305 in words is "twenty billion, two hundred fourteen million, two hundred ten thousand, three hundred five".