1212244113 has 4 divisors (see below), whose sum is σ = 1616325488. Its totient is φ = 808162740.

The previous prime is 1212244087. The next prime is 1212244129. The reversal of 1212244113 is 3114422121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1212244113 - 2⁵ = 1212244081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212244113.

It is not an unprimeable number, because it can be changed into a prime (1212244193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202040683 + ... + 202040688.

It is an arithmetic number, because the mean of its divisors is an integer number (404081372).

Almost surely, 2^1212244113 is an apocalyptic number.

It is an amenable number.

1212244113 is a deficient number, since it is larger than the sum of its proper divisors (404081375).

1212244113 is an equidigital number, since it uses as much as digits as its factorization.

1212244113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404081374.

The product of its digits is 384, while the sum is 21.

The square root of 1212244113 is about 34817.2961758951. The cubic root of 1212244113 is about 1066.2605990260.

Adding to 1212244113 its reverse (3114422121), we get a palindrome (4326666234).

The spelling of 1212244113 in words is "one billion, two hundred twelve million, two hundred forty-four thousand, one hundred thirteen".