1213211230112 has 48 divisors (see below), whose sum is σ = 2787804552960. Its totient is φ = 508884949248.

The previous prime is 1213211230111. The next prime is 1213211230129. The reversal of 1213211230112 is 2110321123121.

It is not an unprimeable number, because it can be changed into a prime (1213211230111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57607787 + ... + 57628842.

It is an arithmetic number, because the mean of its divisors is an integer number (58079261520).

Almost surely, 2^{1213211230112} is an apocalyptic number.

It is an amenable number.

1213211230112 is an abundant number, since it is smaller than the sum of its proper divisors (1574593322848).

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

1213211230112 is a wasteful number, since it uses less digits than its factorization.

1213211230112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115236693 (or 115236685 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1213211230112 its reverse (2110321123121), we get a palindrome (3323532353233).

The spelling of 1213211230112 in words is "one trillion, two hundred thirteen billion, two hundred eleven million, two hundred thirty thousand, one hundred twelve".