270306221 has 2 divisors, whose sum is σ = 270306222. Its totient is φ = 270306220.

The previous prime is 270306209. The next prime is 270306263. The reversal of 270306221 is 122603072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 246050596 + 24255625 = 15686^2 + 4925^2 .

It is a cyclic number.

It is not a de Polignac number, because 270306221 - 2¹⁸ = 270044077 is a prime.

It is a super-2 number, since 2×270306221² = 146130906222601682, 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 (270306121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135153110 + 135153111.

It is an arithmetic number, because the mean of its divisors is an integer number (135153111).

Almost surely, 2^270306221 is an apocalyptic number.

It is an amenable number.

270306221 is a deficient number, since it is larger than the sum of its proper divisors (1).

270306221 is an equidigital number, since it uses as much as digits as its factorization.

270306221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 270306221 is about 16440.9920929365. The cubic root of 270306221 is about 646.5746603021.

Adding to 270306221 its reverse (122603072), we get a palindrome (392909293).

The spelling of 270306221 in words is "two hundred seventy million, three hundred six thousand, two hundred twenty-one".