1212323012 has 12 divisors (see below), whose sum is σ = 2151446976. Its totient is φ = 597623880.

The previous prime is 1212323011. The next prime is 1212323017. The reversal of 1212323012 is 2103232121.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1212323011) 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, 2134088 + ... + 2134655.

It is an arithmetic number, because the mean of its divisors is an integer number (179287248).

Almost surely, 2^1212323012 is an apocalyptic number.

It is an amenable number.

1212323012 is a deficient number, since it is larger than the sum of its proper divisors (939123964).

1212323012 is a wasteful number, since it uses less digits than its factorization.

1212323012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4268818 (or 4268816 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1212323012 is about 34818.4292006403. The cubic root of 1212323012 is about 1066.2837310747.

Adding to 1212323012 its reverse (2103232121), we get a palindrome (3315555133).

The spelling of 1212323012 in words is "one billion, two hundred twelve million, three hundred twenty-three thousand, twelve".