20211223323 has 8 divisors (see below), whose sum is σ = 27676630288. Its totient is φ = 13109982624.

The previous prime is 20211223321. The next prime is 20211223337. The reversal of 20211223323 is 32332211202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20211223323 - 2¹ = 20211223321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20211223323.

It is not an unprimeable number, because it can be changed into a prime (20211223321) 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 7 ways as a sum of consecutive naturals, for example, 91041436 + ... + 91041657.

It is an arithmetic number, because the mean of its divisors is an integer number (3459578786).

Almost surely, 2^20211223323 is an apocalyptic number.

20211223323 is a deficient number, since it is larger than the sum of its proper divisors (7465406965).

20211223323 is a wasteful number, since it uses less digits than its factorization.

20211223323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182083133.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20211223323 its reverse (32332211202), we get a palindrome (52543434525).

The spelling of 20211223323 in words is "twenty billion, two hundred eleven million, two hundred twenty-three thousand, three hundred twenty-three".