20313024211221 has 32 divisors (see below), whose sum is σ = 30965218099200. Its totient is φ = 11602929031680.

The previous prime is 20313024211219. The next prime is 20313024211247. The reversal of 20313024211221 is 12211242031302.

It is not a de Polignac number, because 20313024211221 - 2¹ = 20313024211219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20313024211191 and 20313024211200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313024211021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 661883845 + ... + 661914533.

It is an arithmetic number, because the mean of its divisors is an integer number (967663065600).

Almost surely, 2^{20313024211221} is an apocalyptic number.

20313024211221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20313024211221 is a deficient number, since it is larger than the sum of its proper divisors (10652193887979).

20313024211221 is a wasteful number, since it uses less digits than its factorization.

20313024211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41929.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 20313024211221 its reverse (12211242031302), we get a palindrome (32524266242523).

The spelling of 20313024211221 in words is "twenty trillion, three hundred thirteen billion, twenty-four million, two hundred eleven thousand, two hundred twenty-one".