1144221331 has 8 divisors (see below), whose sum is σ = 1249366464. Its totient is φ = 1039263720.

The previous prime is 1144221313. The next prime is 1144221341. The reversal of 1144221331 is 1331224411.

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

It is not a de Polignac number, because 1144221331 - 2¹³ = 1144213139 is a prime.

It is a super-2 number, since 2×1144221331² = 2618484908630823122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144221301) 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, 33961 + ... + 58666.

It is an arithmetic number, because the mean of its divisors is an integer number (156170808).

Almost surely, 2^1144221331 is an apocalyptic number.

1144221331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1144221331 is a deficient number, since it is larger than the sum of its proper divisors (105145133).

1144221331 is a wasteful number, since it uses less digits than its factorization.

1144221331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93761.

The product of its digits is 576, while the sum is 22.

The square root of 1144221331 is about 33826.3407864345. The cubic root of 1144221331 is about 1045.9317501933.

Adding to 1144221331 its reverse (1331224411), we get a palindrome (2475445742).

The spelling of 1144221331 in words is "one billion, one hundred forty-four million, two hundred twenty-one thousand, three hundred thirty-one".