1212340322 has 4 divisors (see below), whose sum is σ = 1818510486. Its totient is φ = 606170160.

The previous prime is 1212340321. The next prime is 1212340351. The reversal of 1212340322 is 2230432121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2230432121 = 61 ⋅36564461.

It can be written as a sum of positive squares in only one way, i.e., 1110955561 + 101384761 = 33331^2 + 10069^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1212340294 and 1212340303.

It is not an unprimeable number, because it can be changed into a prime (1212340321) 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, 303085079 + ... + 303085082.

Almost surely, 2^1212340322 is an apocalyptic number.

1212340322 is a deficient number, since it is larger than the sum of its proper divisors (606170164).

1212340322 is an equidigital number, since it uses as much as digits as its factorization.

1212340322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606170163.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1212340322 is about 34818.6777750104. The cubic root of 1212340322 is about 1066.2888059828.

Adding to 1212340322 its reverse (2230432121), we get a palindrome (3442772443).

The spelling of 1212340322 in words is "one billion, two hundred twelve million, three hundred forty thousand, three hundred twenty-two".