353350221 has 24 divisors (see below), whose sum is σ = 560808864. Its totient is φ = 197215200.

The previous prime is 353350213. The next prime is 353350223. The reversal of 353350221 is 122053353.

It is a happy number.

It is not a de Polignac number, because 353350221 - 2³ = 353350213 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 353350191 and 353350200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (353350223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21630 + ... + 34271.

It is an arithmetic number, because the mean of its divisors is an integer number (23367036).

Almost surely, 2^353350221 is an apocalyptic number.

It is an amenable number.

353350221 is a deficient number, since it is larger than the sum of its proper divisors (207458643).

353350221 is a wasteful number, since it uses less digits than its factorization.

353350221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55961 (or 55954 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 353350221 is about 18797.6121089887. The cubic root of 353350221 is about 706.9713088380.

The spelling of 353350221 in words is "three hundred fifty-three million, three hundred fifty thousand, two hundred twenty-one".