1212288799 has 4 divisors (see below), whose sum is σ = 1212361920. Its totient is φ = 1212215680.

The previous prime is 1212288797. The next prime is 1212288811. The reversal of 1212288799 is 9978822121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9978822121 = 743 ⋅13430447.

It is a cyclic number.

It is not a de Polignac number, because 1212288799 - 2¹ = 1212288797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212288797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1554 + ... + 49264.

It is an arithmetic number, because the mean of its divisors is an integer number (303090480).

Almost surely, 2^1212288799 is an apocalyptic number.

1212288799 is a deficient number, since it is larger than the sum of its proper divisors (73121).

1212288799 is an equidigital number, since it uses as much as digits as its factorization.

1212288799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73120.

The product of its digits is 290304, while the sum is 49.

The square root of 1212288799 is about 34817.9378912652. The cubic root of 1212288799 is about 1066.2737004399.

The spelling of 1212288799 in words is "one billion, two hundred twelve million, two hundred eighty-eight thousand, seven hundred ninety-nine".