1212414866 has 16 divisors (see below), whose sum is σ = 1963782744. Its totient is φ = 558071424.

The previous prime is 1212414839. The next prime is 1212414869. The reversal of 1212414866 is 6684142121.

It can be written as a sum of positive squares in 4 ways, for example, as 529690225 + 682724641 = 23015^2 + 26129^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1212414869) 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, 52811 + ... + 72206.

Almost surely, 2^1212414866 is an apocalyptic number.

1212414866 is a deficient number, since it is larger than the sum of its proper divisors (751367878).

1212414866 is a wasteful number, since it uses less digits than its factorization.

1212414866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125405.

The product of its digits is 18432, while the sum is 35.

The square root of 1212414866 is about 34819.7482185038. The cubic root of 1212414866 is about 1066.3106600784.

Adding to 1212414866 its reverse (6684142121), we get a palindrome (7896556987).

The spelling of 1212414866 in words is "one billion, two hundred twelve million, four hundred fourteen thousand, eight hundred sixty-six".