1244213112 has 32 divisors (see below), whose sum is σ = 3119950080. Its totient is φ = 413482080.

The previous prime is 1244213111. The next prime is 1244213123. The reversal of 1244213112 is 2113124421.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244213111) 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, 70368 + ... + 86255.

It is an arithmetic number, because the mean of its divisors is an integer number (97498440).

Almost surely, 2^1244213112 is an apocalyptic number.

1244213112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1244213112 is an abundant number, since it is smaller than the sum of its proper divisors (1875736968).

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

1244213112 is a wasteful number, since it uses less digits than its factorization.

1244213112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156963 (or 156959 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 1244213112 is about 35273.4051659320. The cubic root of 1244213112 is about 1075.5524435064.

Adding to 1244213112 its reverse (2113124421), we get a palindrome (3357337533).

The spelling of 1244213112 in words is "one billion, two hundred forty-four million, two hundred thirteen thousand, one hundred twelve".