3442666221 has 24 divisors (see below), whose sum is σ = 5375945120. Its totient is φ = 2115546336.

The previous prime is 3442666169. The next prime is 3442666223. The reversal of 3442666221 is 1226662443.

It is not a de Polignac number, because 3442666221 - 2¹⁹ = 3442141933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3442666223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 265735 + ... + 278388.

Almost surely, 2^3442666221 is an apocalyptic number.

It is an amenable number.

3442666221 is a deficient number, since it is larger than the sum of its proper divisors (1933278899).

3442666221 is a wasteful number, since it uses less digits than its factorization.

3442666221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544185 (or 544182 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 3442666221 is about 58674.2381373631. The cubic root of 3442666221 is about 1509.9583663214.

The spelling of 3442666221 in words is "three billion, four hundred forty-two million, six hundred sixty-six thousand, two hundred twenty-one".