1144322521 has 4 divisors (see below), whose sum is σ = 1155017232. Its totient is φ = 1133627812.

The previous prime is 1144322507. The next prime is 1144322567. The reversal of 1144322521 is 1252234411.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1252234411 = 7333 ⋅170767.

It is a cyclic number.

It is not a de Polignac number, because 1144322521 - 2²⁵ = 1110768089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144322591) 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, 5347195 + ... + 5347408.

It is an arithmetic number, because the mean of its divisors is an integer number (288754308).

Almost surely, 2^1144322521 is an apocalyptic number.

It is an amenable number.

1144322521 is a deficient number, since it is larger than the sum of its proper divisors (10694711).

1144322521 is a wasteful number, since it uses less digits than its factorization.

1144322521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10694710.

The product of its digits is 1920, while the sum is 25.

The square root of 1144322521 is about 33827.8364812177. The cubic root of 1144322521 is about 1045.9625818489.

Adding to 1144322521 its reverse (1252234411), we get a palindrome (2396556932).

The spelling of 1144322521 in words is "one billion, one hundred forty-four million, three hundred twenty-two thousand, five hundred twenty-one".