1144121223 has 32 divisors (see below), whose sum is σ = 1822012416. Its totient is φ = 624400128.

The previous prime is 1144121207. The next prime is 1144121239. The reversal of 1144121223 is 3221214411.

It is an interprime number because it is at equal distance from previous prime (1144121207) and next prime (1144121239).

It is not a de Polignac number, because 1144121223 - 2⁴ = 1144121207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1144121223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144121243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 410611 + ... + 413387.

It is an arithmetic number, because the mean of its divisors is an integer number (56937888).

Almost surely, 2^1144121223 is an apocalyptic number.

1144121223 is a deficient number, since it is larger than the sum of its proper divisors (677891193).

1144121223 is a wasteful number, since it uses less digits than its factorization.

1144121223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3663.

The product of its digits is 384, while the sum is 21.

The square root of 1144121223 is about 33824.8610196701. The cubic root of 1144121223 is about 1045.9012464243.

Adding to 1144121223 its reverse (3221214411), we get a palindrome (4365335634).

The spelling of 1144121223 in words is "one billion, one hundred forty-four million, one hundred twenty-one thousand, two hundred twenty-three".