20201323111 has 8 divisors (see below), whose sum is σ = 20422632384. Its totient is φ = 19980280320.

The previous prime is 20201323097. The next prime is 20201323117. The reversal of 20201323111 is 11132310202.

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

It is a cyclic number.

It is not a de Polignac number, because 20201323111 - 2⁷ = 20201322983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201323117) 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, 87771 + ... + 219331.

It is an arithmetic number, because the mean of its divisors is an integer number (2552829048).

Almost surely, 2^20201323111 is an apocalyptic number.

20201323111 is a deficient number, since it is larger than the sum of its proper divisors (221309273).

20201323111 is a wasteful number, since it uses less digits than its factorization.

20201323111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133241.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20201323111 its reverse (11132310202), we get a palindrome (31333633313).

The spelling of 20201323111 in words is "twenty billion, two hundred one million, three hundred twenty-three thousand, one hundred eleven".