1244224421 has 4 divisors (see below), whose sum is σ = 1357335744. Its totient is φ = 1131113100.

The previous prime is 1244224409. The next prime is 1244224459.

It is a happy number.

1244224421 is nontrivially palindromic in base 10.

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 not a de Polignac number, because 1244224421 - 2⁶ = 1244224357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244224021) 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, 56555645 + ... + 56555666.

It is an arithmetic number, because the mean of its divisors is an integer number (339333936).

Almost surely, 2^1244224421 is an apocalyptic number.

1244224421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1244224421 is a deficient number, since it is larger than the sum of its proper divisors (113111323).

1244224421 is a wasteful number, since it uses less digits than its factorization.

1244224421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113111322.

The product of its digits is 4096, while the sum is 26.

The square root of 1244224421 is about 35273.5654704766. The cubic root of 1244224421 is about 1075.5557021619. Note that the first 3 decimals are identical.

It can be divided in two parts, 12442 and 24421, that added together give a palindrome (36863).

The spelling of 1244224421 in words is "one billion, two hundred forty-four million, two hundred twenty-four thousand, four hundred twenty-one".