1201320266 has 32 divisors (see below), whose sum is σ = 1940329728. Its totient is φ = 555793920.

The previous prime is 1201320259. The next prime is 1201320287. The reversal of 1201320266 is 6620231021.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1069181 + ... + 1070303.

It is an arithmetic number, because the mean of its divisors is an integer number (60635304).

Almost surely, 2^1201320266 is an apocalyptic number.

1201320266 is a deficient number, since it is larger than the sum of its proper divisors (739009462).

1201320266 is a wasteful number, since it uses less digits than its factorization.

1201320266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1201320266 is about 34660.0673109560. The cubic root of 1201320266 is about 1063.0481463378.

Adding to 1201320266 its reverse (6620231021), we get a palindrome (7821551287).

The spelling of 1201320266 in words is "one billion, two hundred one million, three hundred twenty thousand, two hundred sixty-six".