1144230021 has 24 divisors (see below), whose sum is σ = 1809724800. Its totient is φ = 690897600.

The previous prime is 1144230019. The next prime is 1144230037. The reversal of 1144230021 is 1200324411.

It is not a de Polignac number, because 1144230021 - 2¹ = 1144230019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1144229976 and 1144230003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144230041) 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 23 ways as a sum of consecutive naturals, for example, 5505 + ... + 48153.

It is an arithmetic number, because the mean of its divisors is an integer number (75405200).

Almost surely, 2^1144230021 is an apocalyptic number.

1144230021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1144230021 is a deficient number, since it is larger than the sum of its proper divisors (665494779).

1144230021 is a wasteful number, since it uses less digits than its factorization.

1144230021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42937 (or 42934 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1144230021 is about 33826.4692363835. The cubic root of 1144230021 is about 1045.9343980271.

Adding to 1144230021 its reverse (1200324411), we get a palindrome (2344554432).

The spelling of 1144230021 in words is "one billion, one hundred forty-four million, two hundred thirty thousand, twenty-one".