1244112101 has 4 divisors (see below), whose sum is σ = 1246999104. Its totient is φ = 1241225100.

The previous prime is 1244112083. The next prime is 1244112169. The reversal of 1244112101 is 1012114421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1244112101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1244112101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244312101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1442855 + ... + 1443716.

It is an arithmetic number, because the mean of its divisors is an integer number (311749776).

Almost surely, 2^1244112101 is an apocalyptic number.

It is an amenable number.

1244112101 is a deficient number, since it is larger than the sum of its proper divisors (2887003).

1244112101 is an equidigital number, since it uses as much as digits as its factorization.

1244112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887002.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1244112101 is about 35271.9733074292. The cubic root of 1244112101 is about 1075.5233366042.

Adding to 1244112101 its reverse (1012114421), we get a palindrome (2256226522).

It can be divided in two parts, 12441 and 12101, that added together give a palindrome (24542).

The spelling of 1244112101 in words is "one billion, two hundred forty-four million, one hundred twelve thousand, one hundred one".