1212330664 has 16 divisors (see below), whose sum is σ = 2281213620. Its totient is φ = 604007040.

The previous prime is 1212330659. The next prime is 1212330719. The reversal of 1212330664 is 4660332121.

It can be written as a sum of positive squares in 2 ways, for example, as 1172514564 + 39816100 = 34242^2 + 6310^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267399 + ... + 271894.

Almost surely, 2^1212330664 is an apocalyptic number.

It is an amenable number.

1212330664 is a deficient number, since it is larger than the sum of its proper divisors (1068882956).

1212330664 is a wasteful number, since it uses less digits than its factorization.

1212330664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539580 (or 539576 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 1212330664 is about 34818.5390848037. The cubic root of 1212330664 is about 1066.2859744774.

Adding to 1212330664 its reverse (4660332121), we get a palindrome (5872662785).

The spelling of 1212330664 in words is "one billion, two hundred twelve million, three hundred thirty thousand, six hundred sixty-four".