353838370221 has 40 divisors (see below), whose sum is σ = 616412139200. Its totient is φ = 202193338536.

The previous prime is 353838370213. The next prime is 353838370279. The reversal of 353838370221 is 122073838353.

353838370221 is a `hidden beast` number, since 3 + 53 + 8 + 3 + 8 + 370 + 221 = 666.

It is not a de Polignac number, because 353838370221 - 2³ = 353838370213 is a prime.

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 (353838370211) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6340111 + ... + 6395676.

It is an arithmetic number, because the mean of its divisors is an integer number (15410303480).

Almost surely, 2^353838370221 is an apocalyptic number.

It is an amenable number.

353838370221 is a deficient number, since it is larger than the sum of its proper divisors (262573768979).

353838370221 is an equidigital number, since it uses as much as digits as its factorization.

353838370221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12735820 (or 12735797 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 353838370221 in words is "three hundred fifty-three billion, eight hundred thirty-eight million, three hundred seventy thousand, two hundred twenty-one".