20211122323 has 16 divisors (see below), whose sum is σ = 23719792320. Its totient is φ = 16859865600.

The previous prime is 20211122311. The next prime is 20211122353. The reversal of 20211122323 is 32322111202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20211122323 is a prime.

It is a super-3 number, since 3×20211122323³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20211122323.

It is not an unprimeable number, because it can be changed into a prime (20211122303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31293 + ... + 203473.

It is an arithmetic number, because the mean of its divisors is an integer number (1482487020).

Almost surely, 2^20211122323 is an apocalyptic number.

20211122323 is a deficient number, since it is larger than the sum of its proper divisors (3508669997).

20211122323 is a wasteful number, since it uses less digits than its factorization.

20211122323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172638.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20211122323 its reverse (32322111202), we get a palindrome (52533233525).

The spelling of 20211122323 in words is "twenty billion, two hundred eleven million, one hundred twenty-two thousand, three hundred twenty-three".