1212323369 has 2 divisors, whose sum is σ = 1212323370. Its totient is φ = 1212323368.

The previous prime is 1212323317. The next prime is 1212323401. The reversal of 1212323369 is 9633232121.

It is an a-pointer prime, because the next prime (1212323401) can be obtained adding 1212323369 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1110555625 + 101767744 = 33325^2 + 10088^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212323369 is a prime.

It is a super-2 number, since 2×1212323369² = 2939455902047020322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1212323309) by changing a digit.

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 as a sum of consecutive naturals, namely, 606161684 + 606161685.

It is an arithmetic number, because the mean of its divisors is an integer number (606161685).

Almost surely, 2^1212323369 is an apocalyptic number.

It is an amenable number.

1212323369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212323369 is an equidigital number, since it uses as much as digits as its factorization.

1212323369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 32.

The square root of 1212323369 is about 34818.4343272353. The cubic root of 1212323369 is about 1066.2838357397.

The spelling of 1212323369 in words is "one billion, two hundred twelve million, three hundred twenty-three thousand, three hundred sixty-nine".