1213240112 has 40 divisors (see below), whose sum is σ = 2688446976. Its totient is φ = 519575616.

The previous prime is 1213240111. The next prime is 1213240121. The reversal of 1213240112 is 2110423121.

It is not an unprimeable number, because it can be changed into a prime (1213240111) 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, 189833 + ... + 196119.

Almost surely, 2^1213240112 is an apocalyptic number.

It is an amenable number.

1213240112 is an abundant number, since it is smaller than the sum of its proper divisors (1475206864).

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

1213240112 is a wasteful number, since it uses less digits than its factorization.

1213240112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8025 (or 8019 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1213240112 is about 34831.5964606849. The cubic root of 1213240112 is about 1066.5525379628.

Adding to 1213240112 its reverse (2110423121), we get a palindrome (3323663233).

The spelling of 1213240112 in words is "one billion, two hundred thirteen million, two hundred forty thousand, one hundred twelve".