1213341266 has 16 divisors (see below), whose sum is σ = 1900376640. Its totient is φ = 580273680.

The previous prime is 1213341263. The next prime is 1213341307. The reversal of 1213341266 is 6621433121.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (1213341263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91550 + ... + 103961.

It is an arithmetic number, because the mean of its divisors is an integer number (118773540).

Almost surely, 2^1213341266 is an apocalyptic number.

1213341266 is a deficient number, since it is larger than the sum of its proper divisors (687035374).

1213341266 is a wasteful number, since it uses less digits than its factorization.

1213341266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195649.

The product of its digits is 5184, while the sum is 29.

The square root of 1213341266 is about 34833.0484741143. The cubic root of 1213341266 is about 1066.5821784426.

Adding to 1213341266 its reverse (6621433121), we get a palindrome (7834774387).

The spelling of 1213341266 in words is "one billion, two hundred thirteen million, three hundred forty-one thousand, two hundred sixty-six".