1230112212 has 144 divisors (see below), whose sum is σ = 3555095040. Its totient is φ = 323388288.

The previous prime is 1230112199. The next prime is 1230112267. The reversal of 1230112212 is 2122110321.

It is a super-2 number, since 2×1230112212² = 3026352108223065888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1230112191 and 1230112200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2184643 + ... + 2185205.

It is an arithmetic number, because the mean of its divisors is an integer number (24688160).

Almost surely, 2^1230112212 is an apocalyptic number.

1230112212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230112212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1777547520).

1230112212 is an abundant number, since it is smaller than the sum of its proper divisors (2324982828).

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

1230112212 is a wasteful number, since it uses less digits than its factorization.

1230112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1230112212 is about 35072.9555640810. The cubic root of 1230112212 is about 1071.4738509677.

Adding to 1230112212 its reverse (2122110321), we get a palindrome (3352222533).

The spelling of 1230112212 in words is "one billion, two hundred thirty million, one hundred twelve thousand, two hundred twelve".