1222010305 has 4 divisors (see below), whose sum is σ = 1466412372. Its totient is φ = 977608240.

The previous prime is 1222010261. The next prime is 1222010329. The reversal of 1222010305 is 5030102221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 934402624 + 287607681 = 30568^2 + 16959^2 .

It is not a de Polignac number, because 1222010305 - 2²⁷ = 1087792577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122201026 + ... + 122201035.

It is an arithmetic number, because the mean of its divisors is an integer number (366603093).

Almost surely, 2^1222010305 is an apocalyptic number.

It is an amenable number.

1222010305 is a deficient number, since it is larger than the sum of its proper divisors (244402067).

1222010305 is an equidigital number, since it uses as much as digits as its factorization.

1222010305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244402066.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1222010305 is about 34957.2639804662. The cubic root of 1222010305 is about 1069.1163126300.

Adding to 1222010305 its reverse (5030102221), we get a palindrome (6252112526).

The spelling of 1222010305 in words is "one billion, two hundred twenty-two million, ten thousand, three hundred five".