4340001221 has 8 divisors (see below), whose sum is σ = 4422284664. Its totient is φ = 4258077120.

The previous prime is 4340001203. The next prime is 4340001241. The reversal of 4340001221 is 1221000434.

It can be written as a sum of positive squares in 4 ways, for example, as 693532225 + 3646468996 = 26335^2 + 60386^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4340001221 is a prime.

It is a super-2 number, since 2×4340001221² = 37671221196562981682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4340001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4340001241) 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, 65390 + ... + 113823.

It is an arithmetic number, because the mean of its divisors is an integer number (552785583).

Almost surely, 2^4340001221 is an apocalyptic number.

It is an amenable number.

4340001221 is a deficient number, since it is larger than the sum of its proper divisors (82283443).

4340001221 is a wasteful number, since it uses less digits than its factorization.

4340001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179671.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 4340001221 is about 65878.6856350368. The cubic root of 4340001221 is about 1631.1602038894.

Adding to 4340001221 its reverse (1221000434), we get a palindrome (5561001655).

The spelling of 4340001221 in words is "four billion, three hundred forty million, one thousand, two hundred twenty-one".