20211300311223 has 32 divisors (see below), whose sum is σ = 31809122620416. Its totient is φ = 11176178128128.

The previous prime is 20211300311177. The next prime is 20211300311269. The reversal of 20211300311223 is 32211300311202.

It is an interprime number because it is at equal distance from previous prime (20211300311177) and next prime (20211300311269).

It is not a de Polignac number, because 20211300311223 - 2¹⁴ = 20211300294839 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 20211300311223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211300311023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124297515 + ... + 124460012.

It is an arithmetic number, because the mean of its divisors is an integer number (994035081888).

Almost surely, 2^{20211300311223} is an apocalyptic number.

20211300311223 is a deficient number, since it is larger than the sum of its proper divisors (11597822309193).

20211300311223 is a wasteful number, since it uses less digits than its factorization.

20211300311223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248757663.

The product of its (nonzero) digits is 432, while the sum is 21.

Subtracting from 20211300311223 its sum of digits (21), we obtain a palindrome (20211300311202).

Adding to 20211300311223 its reverse (32211300311202), we get a palindrome (52422600622425).

The spelling of 20211300311223 in words is "twenty trillion, two hundred eleven billion, three hundred million, three hundred eleven thousand, two hundred twenty-three".