20212213220323 has 4 divisors (see below), whose sum is σ = 20593575733968. Its totient is φ = 19830850706680.

The previous prime is 20212213220299. The next prime is 20212213220357. The reversal of 20212213220323 is 32302231221202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20212213220323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212213220623) 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, 190681256743 + ... + 190681256848.

It is an arithmetic number, because the mean of its divisors is an integer number (5148393933492).

Almost surely, 2^{20212213220323} is an apocalyptic number.

20212213220323 is a deficient number, since it is larger than the sum of its proper divisors (381362513645).

20212213220323 is an equidigital number, since it uses as much as digits as its factorization.

20212213220323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381362513644.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 20212213220323 its reverse (32302231221202), we get a palindrome (52514444441525).

The spelling of 20212213220323 in words is "twenty trillion, two hundred twelve billion, two hundred thirteen million, two hundred twenty thousand, three hundred twenty-three".