1146443221 has 8 divisors (see below), whose sum is σ = 1429331904. Its totient is φ = 893332320.

The previous prime is 1146443213. The next prime is 1146443279. The reversal of 1146443221 is 1223446411.

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 1146443221 - 2³ = 1146443213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1146443221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1146443281) 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, 7444360 + ... + 7444513.

It is an arithmetic number, because the mean of its divisors is an integer number (178666488).

Almost surely, 2^1146443221 is an apocalyptic number.

1146443221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1146443221 is a deficient number, since it is larger than the sum of its proper divisors (282888683).

1146443221 is a wasteful number, since it uses less digits than its factorization.

1146443221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14888891.

The product of its digits is 4608, while the sum is 28.

The square root of 1146443221 is about 33859.1674587548. The cubic root of 1146443221 is about 1046.6083217079.

Adding to 1146443221 its reverse (1223446411), we get a palindrome (2369889632).

The spelling of 1146443221 in words is "one billion, one hundred forty-six million, four hundred forty-three thousand, two hundred twenty-one".