3440202221 has 4 divisors (see below), whose sum is σ = 3440352672. Its totient is φ = 3440051772.

The previous prime is 3440202209. The next prime is 3440202251. The reversal of 3440202221 is 1222020443.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1222020443 = 7 ⋅174574349.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3440202221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3440202193 and 3440202202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3440202251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33041 + ... + 89286.

It is an arithmetic number, because the mean of its divisors is an integer number (860088168).

Almost surely, 2^3440202221 is an apocalyptic number.

It is an amenable number.

3440202221 is a deficient number, since it is larger than the sum of its proper divisors (150451).

3440202221 is a wasteful number, since it uses less digits than its factorization.

3440202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150450.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 3440202221 is about 58653.2370888428. The cubic root of 3440202221 is about 1509.5980423597.

Adding to 3440202221 its reverse (1222020443), we get a palindrome (4662222664).

The spelling of 3440202221 in words is "three billion, four hundred forty million, two hundred two thousand, two hundred twenty-one".