6351349221 has 12 divisors (see below), whose sum is σ = 10484767072. Its totient is φ = 3629342376.

The previous prime is 6351349201. The next prime is 6351349229. The reversal of 6351349221 is 1229431536.

6351349221 is a `hidden beast` number, since 635 + 13 + 4 + 9 + 2 + 2 + 1 = 666.

It is not a de Polignac number, because 6351349221 - 2⁷ = 6351349093 is a prime.

It is a super-3 number, since 3×6351349221³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6351349229) 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 11 ways as a sum of consecutive naturals, for example, 50407471 + ... + 50407596.

Almost surely, 2^6351349221 is an apocalyptic number.

It is an amenable number.

6351349221 is a deficient number, since it is larger than the sum of its proper divisors (4133417851).

6351349221 is a wasteful number, since it uses less digits than its factorization.

6351349221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100815080 (or 100815077 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 6351349221 is about 79695.3525683901. The cubic root of 6351349221 is about 1851.9190430778.

The spelling of 6351349221 in words is "six billion, three hundred fifty-one million, three hundred forty-nine thousand, two hundred twenty-one".