10255505431221 has 24 divisors (see below), whose sum is σ = 14967860491584. Its totient is φ = 6766124648640.

The previous prime is 10255505431189. The next prime is 10255505431229. The reversal of 10255505431221 is 12213450555201.

10255505431221 is a `hidden beast` number, since 1 + 0 + 2 + 5 + 550 + 54 + 31 + 2 + 21 = 666.

10255505431221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10255505431221 - 2⁵ = 10255505431189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10255505431229) 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, 14688240 + ... + 15370601.

It is an arithmetic number, because the mean of its divisors is an integer number (623660853816).

Almost surely, 2^{10255505431221} is an apocalyptic number.

It is an amenable number.

10255505431221 is a deficient number, since it is larger than the sum of its proper divisors (4712355060363).

10255505431221 is a wasteful number, since it uses less digits than its factorization.

10255505431221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30059241 (or 30059238 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

Adding to 10255505431221 its reverse (12213450555201), we get a palindrome (22468955986422).

The spelling of 10255505431221 in words is "ten trillion, two hundred fifty-five billion, five hundred five million, four hundred thirty-one thousand, two hundred twenty-one".