1213301266 has 16 divisors (see below), whose sum is σ = 1827826560. Its totient is φ = 604031760.

The previous prime is 1213301251. The next prime is 1213301279. The reversal of 1213301266 is 6621033121.

It is a self number, because there is not a number n which added to its sum of digits gives 1213301266.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748605 + ... + 750223.

It is an arithmetic number, because the mean of its divisors is an integer number (114239160).

Almost surely, 2^1213301266 is an apocalyptic number.

1213301266 is a deficient number, since it is larger than the sum of its proper divisors (614525294).

1213301266 is a wasteful number, since it uses less digits than its factorization.

1213301266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3009.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1213301266 is about 34832.4743020073. The cubic root of 1213301266 is about 1066.5704577072.

Adding to 1213301266 its reverse (6621033121), we get a palindrome (7834334387).

The spelling of 1213301266 in words is "one billion, two hundred thirteen million, three hundred one thousand, two hundred sixty-six".