235826221 has 2 divisors, whose sum is σ = 235826222. Its totient is φ = 235826220.

The previous prime is 235826191. The next prime is 235826243. The reversal of 235826221 is 122628532.

235826221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220849321 + 14976900 = 14861^2 + 3870^2 .

It is a cyclic number.

It is not a de Polignac number, because 235826221 - 2⁷ = 235826093 is a prime.

It is a super-2 number, since 2×235826221² = 111228013022281682, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (235826251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117913110 + 117913111.

It is an arithmetic number, because the mean of its divisors is an integer number (117913111).

Almost surely, 2^235826221 is an apocalyptic number.

It is an amenable number.

235826221 is a deficient number, since it is larger than the sum of its proper divisors (1).

235826221 is an equidigital number, since it uses as much as digits as its factorization.

235826221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 31.

The square root of 235826221 is about 15356.6344294575. The cubic root of 235826221 is about 617.8229411113.

The spelling of 235826221 in words is "two hundred thirty-five million, eight hundred twenty-six thousand, two hundred twenty-one".