352421540121 has 16 divisors (see below), whose sum is σ = 547982960000. Its totient is φ = 201383736624.

The previous prime is 352421540101. The next prime is 352421540123. The reversal of 352421540121 is 121045124253.

It is not a de Polignac number, because 352421540121 - 2⁹ = 352421539609 is a prime.

It is a super-2 number, since 2×352421540121² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (352421540123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171243646 + ... + 171245703.

It is an arithmetic number, because the mean of its divisors is an integer number (34248935000).

Almost surely, 2^352421540121 is an apocalyptic number.

It is an amenable number.

352421540121 is a deficient number, since it is larger than the sum of its proper divisors (195561419879).

352421540121 is an equidigital number, since it uses as much as digits as its factorization.

352421540121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342489373 (or 342489359 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 352421540121 its reverse (121045124253), we get a palindrome (473466664374).

The spelling of 352421540121 in words is "three hundred fifty-two billion, four hundred twenty-one million, five hundred forty thousand, one hundred twenty-one".