1244211211 has 8 divisors (see below), whose sum is σ = 1262905280. Its totient is φ = 1225590912.

The previous prime is 1244211203. The next prime is 1244211217. The reversal of 1244211211 is 1121124421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1244211211 - 2³ = 1244211203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1244211217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16021 + ... + 52393.

It is an arithmetic number, because the mean of its divisors is an integer number (157863160).

Almost surely, 2^1244211211 is an apocalyptic number.

1244211211 is a deficient number, since it is larger than the sum of its proper divisors (18694069).

1244211211 is an equidigital number, since it uses as much as digits as its factorization.

1244211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36885.

The product of its digits is 128, while the sum is 19.

The square root of 1244211211 is about 35273.3782192747. The cubic root of 1244211211 is about 1075.5518957368.

Adding to 1244211211 its reverse (1121124421), we get a palindrome (2365335632).

It can be divided in two parts, 12442 and 11211, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 1244211211 in words is "one billion, two hundred forty-four million, two hundred eleven thousand, two hundred eleven".