13352525120421 has 24 divisors (see below), whose sum is σ = 20001738556800. Its totient is φ = 8901494173152.

The previous prime is 13352525120293. The next prime is 13352525120497. The reversal of 13352525120421 is 12402152525331.

13352525120421 is a `hidden beast` number, since 1 + 3 + 3 + 5 + 2 + 525 + 120 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 13352525120421 - 2⁷ = 13352525120293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13352525120821) 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, 11372505 + ... + 12491553.

It is an arithmetic number, because the mean of its divisors is an integer number (833405773200).

Almost surely, 2^{13352525120421} is an apocalyptic number.

It is an amenable number.

13352525120421 is a deficient number, since it is larger than the sum of its proper divisors (6649213436379).

13352525120421 is an equidigital number, since it uses as much as digits as its factorization.

13352525120421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168167 (or 1168155 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 13352525120421 its reverse (12402152525331), we get a palindrome (25754677645752).

The spelling of 13352525120421 in words is "thirteen trillion, three hundred fifty-two billion, five hundred twenty-five million, one hundred twenty thousand, four hundred twenty-one".