2021112113223 has 16 divisors (see below), whose sum is σ = 3100459622400. Its totient is φ = 1147170056736.

The previous prime is 2021112113221. The next prime is 2021112113227. The reversal of 2021112113223 is 3223112111202.

It is not a de Polignac number, because 2021112113223 - 2¹ = 2021112113221 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 2021112113223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021112113221) 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, 322961415 + ... + 322967672.

It is an arithmetic number, because the mean of its divisors is an integer number (193778726400).

Almost surely, 2^{2021112113223} is an apocalyptic number.

2021112113223 is a deficient number, since it is larger than the sum of its proper divisors (1079347509177).

2021112113223 is a wasteful number, since it uses less digits than its factorization.

2021112113223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645929246.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 2021112113223 its reverse (3223112111202), we get a palindrome (5244224224425).

The spelling of 2021112113223 in words is "two trillion, twenty-one billion, one hundred twelve million, one hundred thirteen thousand, two hundred twenty-three".