1212333313 has 4 divisors (see below), whose sum is σ = 1254137940. Its totient is φ = 1170528688.

The previous prime is 1212333299. The next prime is 1212333349. The reversal of 1212333313 is 3133332121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 920333569 + 291999744 = 30337^2 + 17088^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212333313 - 2⁹ = 1212332801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212333373) 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 in 3 ways as a sum of consecutive naturals, for example, 20902270 + ... + 20902327.

It is an arithmetic number, because the mean of its divisors is an integer number (313534485).

Almost surely, 2^1212333313 is an apocalyptic number.

It is an amenable number.

1212333313 is a deficient number, since it is larger than the sum of its proper divisors (41804627).

1212333313 is an equidigital number, since it uses as much as digits as its factorization.

1212333313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41804626.

The product of its digits is 972, while the sum is 22.

The square root of 1212333313 is about 34818.5771248625. The cubic root of 1212333313 is about 1066.2867511053.

Adding to 1212333313 its reverse (3133332121), we get a palindrome (4345665434).

The spelling of 1212333313 in words is "one billion, two hundred twelve million, three hundred thirty-three thousand, three hundred thirteen".