1212230311012 has 12 divisors (see below), whose sum is σ = 2424460622080. Its totient is φ = 519527276136.

The previous prime is 1212230311009. The next prime is 1212230311013. The reversal of 1212230311012 is 2101130322121.

1212230311012 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1212230311013) 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, 21646969812 + ... + 21646969867.

Almost surely, 2^{1212230311012} is an apocalyptic number.

It is an amenable number.

1212230311012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212230311012 is a wasteful number, since it uses less digits than its factorization.

1212230311012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43293939690 (or 43293939688 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1212230311012 its reverse (2101130322121), we get a palindrome (3313360633133).

The spelling of 1212230311012 in words is "one trillion, two hundred twelve billion, two hundred thirty million, three hundred eleven thousand, twelve".