1212321242 has 16 divisors (see below), whose sum is σ = 1987889472. Its totient is φ = 549918720.

The previous prime is 1212321233. The next prime is 1212321263. The reversal of 1212321242 is 2421232121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45863 + ... + 67290.

It is an arithmetic number, because the mean of its divisors is an integer number (124243092).

Almost surely, 2^1212321242 is an apocalyptic number.

1212321242 is a deficient number, since it is larger than the sum of its proper divisors (775568230).

1212321242 is a wasteful number, since it uses less digits than its factorization.

1212321242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113653.

The product of its digits is 384, while the sum is 20.

The square root of 1212321242 is about 34818.4037830570. The cubic root of 1212321242 is about 1066.2832121473.

Adding to 1212321242 its reverse (2421232121), we get a palindrome (3633553363).

The spelling of 1212321242 in words is "one billion, two hundred twelve million, three hundred twenty-one thousand, two hundred forty-two".