1212312232012 has 96 divisors (see below), whose sum is σ = 2702848780800. Its totient is φ = 463180612608.

The previous prime is 1212312232007. The next prime is 1212312232039. The reversal of 1212312232012 is 2102322132121.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81922198 + ... + 81936994.

It is an arithmetic number, because the mean of its divisors is an integer number (28154674800).

Almost surely, 2^{1212312232012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212312232012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1351424390400).

1212312232012 is an abundant number, since it is smaller than the sum of its proper divisors (1490536548788).

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

1212312232012 is a wasteful number, since it uses less digits than its factorization.

1212312232012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23903 (or 23901 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1212312232012 its reverse (2102322132121), we get a palindrome (3314634364133).

The spelling of 1212312232012 in words is "one trillion, two hundred twelve billion, three hundred twelve million, two hundred thirty-two thousand, twelve".