2021533123 has 2 divisors, whose sum is σ = 2021533124. Its totient is φ = 2021533122.

The previous prime is 2021533109. The next prime is 2021533153. The reversal of 2021533123 is 3213351202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021533123 - 2⁵ = 2021533091 is a prime.

It is a super-2 number, since 2×2021533123² = 8173192334772266258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021533094 and 2021533103.

It is not a weakly prime, because it can be changed into another prime (2021533103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010766561 + 1010766562.

It is an arithmetic number, because the mean of its divisors is an integer number (1010766562).

Almost surely, 2^2021533123 is an apocalyptic number.

2021533123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021533123 is an equidigital number, since it uses as much as digits as its factorization.

2021533123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 2021533123 is about 44961.4626430235. The cubic root of 2021533123 is about 1264.4265911359.

Adding to 2021533123 its reverse (3213351202), we get a palindrome (5234884325).

The spelling of 2021533123 in words is "two billion, twenty-one million, five hundred thirty-three thousand, one hundred twenty-three".