1212310112 has 48 divisors (see below), whose sum is σ = 2575101312. Its totient is φ = 558489600.

The previous prime is 1212310109. The next prime is 1212310117. The reversal of 1212310112 is 2110132121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212310117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250112 + ... + 254912.

It is an arithmetic number, because the mean of its divisors is an integer number (53647944).

Almost surely, 2^1212310112 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 1212310112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1287550656).

1212310112 is an abundant number, since it is smaller than the sum of its proper divisors (1362791200).

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

1212310112 is a wasteful number, since it uses less digits than its factorization.

1212310112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5431 (or 5423 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1212310112 is about 34818.2439534219. The cubic root of 1212310112 is about 1066.2799490494.

Adding to 1212310112 its reverse (2110132121), we get a palindrome (3322442233).

The spelling of 1212310112 in words is "one billion, two hundred twelve million, three hundred ten thousand, one hundred twelve".