1144021111 has 8 divisors (see below), whose sum is σ = 1150714800. Its totient is φ = 1137339840.

The previous prime is 1144020959. The next prime is 1144021133. The reversal of 1144021111 is 1111204411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1144021111 - 2⁹ = 1144020599 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 (1144022111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231555 + ... + 236443.

It is an arithmetic number, because the mean of its divisors is an integer number (143839350).

Almost surely, 2^1144021111 is an apocalyptic number.

1144021111 is a deficient number, since it is larger than the sum of its proper divisors (6693689).

1144021111 is a wasteful number, since it uses less digits than its factorization.

1144021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6209.

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 1144021111 is about 33823.3811290356. The cubic root of 1144021111 is about 1045.8707396570.

Adding to 1144021111 its reverse (1111204411), we get a palindrome (2255225522).

The spelling of 1144021111 in words is "one billion, one hundred forty-four million, twenty-one thousand, one hundred eleven".