264770000221 has 2 divisors, whose sum is σ = 264770000222. Its totient is φ = 264770000220.

The previous prime is 264770000179. The next prime is 264770000269. The reversal of 264770000221 is 122000077462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237919572900 + 26850427321 = 487770^2 + 163861^2 .

It is a cyclic number.

It is not a de Polignac number, because 264770000221 - 2¹⁹ = 264769475933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264770000821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132385000110 + 132385000111.

It is an arithmetic number, because the mean of its divisors is an integer number (132385000111).

Almost surely, 2^264770000221 is an apocalyptic number.

It is an amenable number.

264770000221 is a deficient number, since it is larger than the sum of its proper divisors (1).

264770000221 is an equidigital number, since it uses as much as digits as its factorization.

264770000221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 31.

Adding to 264770000221 its reverse (122000077462), we get a palindrome (386770077683).

The spelling of 264770000221 in words is "two hundred sixty-four billion, seven hundred seventy million, two hundred twenty-one", and thus it is an aban number.