20201321311223 has 16 divisors (see below), whose sum is σ = 21772187992800. Its totient is φ = 18632876895360.

The previous prime is 20201321311207. The next prime is 20201321311231. The reversal of 20201321311223 is 32211312310202.

It is not a de Polignac number, because 20201321311223 - 2⁴ = 20201321311207 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 (20201321317223) 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, 94085033 + ... + 94299501.

It is an arithmetic number, because the mean of its divisors is an integer number (1360761749550).

Almost surely, 2^{20201321311223} is an apocalyptic number.

20201321311223 is a deficient number, since it is larger than the sum of its proper divisors (1570866681577).

20201321311223 is a wasteful number, since it uses less digits than its factorization.

20201321311223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220082.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 20201321311223 its reverse (32211312310202), we get a palindrome (52412633621425).

The spelling of 20201321311223 in words is "twenty trillion, two hundred one billion, three hundred twenty-one million, three hundred eleven thousand, two hundred twenty-three".