235016021 has 2 divisors, whose sum is σ = 235016022. Its totient is φ = 235016020.

The previous prime is 235016017. The next prime is 235016039. The reversal of 235016021 is 120610532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232227121 + 2788900 = 15239^2 + 1670^2 .

It is a cyclic number.

It is not a de Polignac number, because 235016021 - 2² = 235016017 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 235015984 and 235016002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (235016071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117508010 + 117508011.

It is an arithmetic number, because the mean of its divisors is an integer number (117508011).

Almost surely, 2^235016021 is an apocalyptic number.

It is an amenable number.

235016021 is a deficient number, since it is larger than the sum of its proper divisors (1).

235016021 is an equidigital number, since it uses as much as digits as its factorization.

235016021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 235016021 is about 15330.2322552530. The cubic root of 235016021 is about 617.1146024603.

Adding to 235016021 its reverse (120610532), we get a palindrome (355626553).

The spelling of 235016021 in words is "two hundred thirty-five million, sixteen thousand, twenty-one".