282232021 has 2 divisors, whose sum is σ = 282232022. Its totient is φ = 282232020.

The previous prime is 282232019. The next prime is 282232043. The reversal of 282232021 is 120232282.

It is a happy number.

It is an a-pointer prime, because the next prime (282232043) can be obtained adding 282232021 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 270767025 + 11464996 = 16455^2 + 3386^2 .

It is a cyclic number.

It is not a de Polignac number, because 282232021 - 2¹ = 282232019 is a prime.

Together with 282232019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 282231983 and 282232001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (282232721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141116010 + 141116011.

It is an arithmetic number, because the mean of its divisors is an integer number (141116011).

Almost surely, 2^282232021 is an apocalyptic number.

It is an amenable number.

282232021 is a deficient number, since it is larger than the sum of its proper divisors (1).

282232021 is an equidigital number, since it uses as much as digits as its factorization.

282232021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 282232021 is about 16799.7625280835. The cubic root of 282232021 is about 655.9470177379.

It can be divided in two parts, 2822 and 32021, that added together give a palindrome (34843).

The spelling of 282232021 in words is "two hundred eighty-two million, two hundred thirty-two thousand, twenty-one".