1345003221 has 8 divisors (see below), whose sum is σ = 1793552544. Its totient is φ = 896561360.

The previous prime is 1345003199. The next prime is 1345003259. The reversal of 1345003221 is 1223005431.

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 1345003221 - 2¹⁷ = 1344872149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345003271) 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, 9295 + ... + 52691.

It is an arithmetic number, because the mean of its divisors is an integer number (224194068).

Almost surely, 2^1345003221 is an apocalyptic number.

It is an amenable number.

1345003221 is a deficient number, since it is larger than the sum of its proper divisors (448549323).

1345003221 is a wasteful number, since it uses less digits than its factorization.

1345003221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53731.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1345003221 is about 36674.2855554133. The cubic root of 1345003221 is about 1103.8441866521.

Adding to 1345003221 its reverse (1223005431), we get a palindrome (2568008652).

The spelling of 1345003221 in words is "one billion, three hundred forty-five million, three thousand, two hundred twenty-one".