20213220323 has 2 divisors, whose sum is σ = 20213220324. Its totient is φ = 20213220322.

The previous prime is 20213220311. The next prime is 20213220343. The reversal of 20213220323 is 32302231202.

It is an a-pointer prime, because the next prime (20213220343) can be obtained adding 20213220323 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20213220323 - 2⁶ = 20213220259 is a prime.

It is a super-2 number, since 2×20213220323² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20213220295 and 20213220304.

It is not a weakly prime, because it can be changed into another prime (20213220343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106610161 + 10106610162.

It is an arithmetic number, because the mean of its divisors is an integer number (10106610162).

Almost surely, 2^20213220323 is an apocalyptic number.

20213220323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213220323 is an equidigital number, since it uses as much as digits as its factorization.

20213220323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20213220323 its reverse (32302231202), we get a palindrome (52515451525).

The spelling of 20213220323 in words is "twenty billion, two hundred thirteen million, two hundred twenty thousand, three hundred twenty-three".