1444225121 has 4 divisors (see below), whose sum is σ = 1449844932. Its totient is φ = 1438605312.

The previous prime is 1444225099. The next prime is 1444225141. The reversal of 1444225121 is 1215224441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1215224441 = 15493 ⋅78437.

It can be written as a sum of positive squares in 2 ways, for example, as 1395769600 + 48455521 = 37360^2 + 6961^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444225121 - 2¹⁰ = 1444224097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1444225141) 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 3 ways as a sum of consecutive naturals, for example, 2809520 + ... + 2810033.

It is an arithmetic number, because the mean of its divisors is an integer number (362461233).

Almost surely, 2^1444225121 is an apocalyptic number.

It is an amenable number.

1444225121 is a deficient number, since it is larger than the sum of its proper divisors (5619811).

1444225121 is an equidigital number, since it uses as much as digits as its factorization.

1444225121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5619810.

The product of its digits is 2560, while the sum is 26.

The square root of 1444225121 is about 38002.9620029808. The cubic root of 1444225121 is about 1130.3465981979.

Adding to 1444225121 its reverse (1215224441), we get a palindrome (2659449562).

The spelling of 1444225121 in words is "one billion, four hundred forty-four million, two hundred twenty-five thousand, one hundred twenty-one".