352225127721 has 24 divisors (see below), whose sum is σ = 478994186080. Its totient is φ = 230225151744.

The previous prime is 352225127719. The next prime is 352225127831. The reversal of 352225127721 is 127721522253.

It is not a de Polignac number, because 352225127721 - 2¹ = 352225127719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 352225127721.

It is not an unprimeable number, because it can be changed into a prime (352225120721) 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, 3913401 + ... + 4002393.

Almost surely, 2^352225127721 is an apocalyptic number.

It is an amenable number.

352225127721 is a deficient number, since it is larger than the sum of its proper divisors (126769058359).

352225127721 is an equidigital number, since it uses as much as digits as its factorization.

352225127721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89493 (or 89434 counting only the distinct ones).

The product of its digits is 117600, while the sum is 39.

Adding to 352225127721 its reverse (127721522253), we get a palindrome (479946649974).

The spelling of 352225127721 in words is "three hundred fifty-two billion, two hundred twenty-five million, one hundred twenty-seven thousand, seven hundred twenty-one".