2021453223 has 4 divisors (see below), whose sum is σ = 2695270968. Its totient is φ = 1347635480.

The previous prime is 2021453209. The next prime is 2021453257. The reversal of 2021453223 is 3223541202.

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 2021453223 - 2¹² = 2021449127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021453193 and 2021453202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021453123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336908868 + ... + 336908873.

It is an arithmetic number, because the mean of its divisors is an integer number (673817742).

Almost surely, 2^2021453223 is an apocalyptic number.

2021453223 is a deficient number, since it is larger than the sum of its proper divisors (673817745).

2021453223 is an equidigital number, since it uses as much as digits as its factorization.

2021453223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673817744.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 2021453223 is about 44960.5740955340. The cubic root of 2021453223 is about 1264.4099323247.

Adding to 2021453223 its reverse (3223541202), we get a palindrome (5244994425).

It can be divided in two parts, 20214 and 53223, that added together give a palindrome (73437).

The spelling of 2021453223 in words is "two billion, twenty-one million, four hundred fifty-three thousand, two hundred twenty-three".