20101311223 has 8 divisors (see below), whose sum is σ = 22999740192. Its totient is φ = 17209585536.

The previous prime is 20101311157. The next prime is 20101311229. The reversal of 20101311223 is 32211310102.

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 20101311223 - 2²¹ = 20099214071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20101311197 and 20101311206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101311229) 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, 1669390 + ... + 1681387.

It is an arithmetic number, because the mean of its divisors is an integer number (2874967524).

Almost surely, 2^20101311223 is an apocalyptic number.

20101311223 is a deficient number, since it is larger than the sum of its proper divisors (2898428969).

20101311223 is an equidigital number, since it uses as much as digits as its factorization.

20101311223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3351641.

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

Adding to 20101311223 its reverse (32211310102), we get a palindrome (52312621325).

The spelling of 20101311223 in words is "twenty billion, one hundred one million, three hundred eleven thousand, two hundred twenty-three".