3551350221 has 12 divisors (see below), whose sum is σ = 5238871872. Its totient is φ = 2317192776.

The previous prime is 3551350193. The next prime is 3551350241. The reversal of 3551350221 is 1220531553.

It is a happy number.

It is not a de Polignac number, because 3551350221 - 2⁵ = 3551350189 is a prime.

It is a super-2 number, since 2×3551350221² = 25224176784393497682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3551350241) 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, 4197391 + ... + 4198236.

It is an arithmetic number, because the mean of its divisors is an integer number (436572656).

Almost surely, 2^3551350221 is an apocalyptic number.

It is an amenable number.

3551350221 is a deficient number, since it is larger than the sum of its proper divisors (1687521651).

3551350221 is a wasteful number, since it uses less digits than its factorization.

3551350221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8395680 (or 8395677 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 3551350221 is about 59593.2061647970. The cubic root of 3551350221 is about 1525.6836810513.

Adding to 3551350221 its reverse (1220531553), we get a palindrome (4771881774).

The spelling of 3551350221 in words is "three billion, five hundred fifty-one million, three hundred fifty thousand, two hundred twenty-one".