2021061223 has 4 divisors (see below), whose sum is σ = 2026691280. Its totient is φ = 2015431168.

The previous prime is 2021061199. The next prime is 2021061233. The reversal of 2021061223 is 3221601202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2021061223 - 2⁵ = 2021061191 is a prime.

It is a super-2 number, since 2×2021061223² = 8169376934228511458, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021061223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021061233) 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 3 ways as a sum of consecutive naturals, for example, 2814490 + ... + 2815207.

It is an arithmetic number, because the mean of its divisors is an integer number (506672820).

Almost surely, 2^2021061223 is an apocalyptic number.

2021061223 is a deficient number, since it is larger than the sum of its proper divisors (5630057).

2021061223 is an equidigital number, since it uses as much as digits as its factorization.

2021061223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5630056.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2021061223 is about 44956.2145092311. The cubic root of 2021061223 is about 1264.3281956266.

Adding to 2021061223 its reverse (3221601202), we get a palindrome (5242662425).

The spelling of 2021061223 in words is "two billion, twenty-one million, sixty-one thousand, two hundred twenty-three".