1213045252 has 12 divisors (see below), whose sum is σ = 2191307776. Its totient is φ = 586957320.

The previous prime is 1213045243. The next prime is 1213045313. The reversal of 1213045252 is 2525403121.

It is an unprimeable number.

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, 4891188 + ... + 4891435.

Almost surely, 2^1213045252 is an apocalyptic number.

It is an amenable number.

1213045252 is a deficient number, since it is larger than the sum of its proper divisors (978262524).

1213045252 is a wasteful number, since it uses less digits than its factorization.

1213045252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9782658 (or 9782656 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1213045252 is about 34828.7991753951. The cubic root of 1213045252 is about 1066.4954347966.

Adding to 1213045252 its reverse (2525403121), we get a palindrome (3738448373).

The spelling of 1213045252 in words is "one billion, two hundred thirteen million, forty-five thousand, two hundred fifty-two".