21229324215471 has 12 divisors (see below), whose sum is σ = 30706759045872. Its totient is φ = 14133415291776.

The previous prime is 21229324215457. The next prime is 21229324215509. The reversal of 21229324215471 is 17451242392212.

It is a happy number.

21229324215471 is a `hidden beast` number, since 2 + 1 + 2 + 293 + 242 + 1 + 54 + 71 = 666.

It is not a de Polignac number, because 21229324215471 - 2⁵ = 21229324215439 is a prime.

It is a super-3 number, since 3×21229324215471³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21229328215471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1622286306 + ... + 1622299391.

It is an arithmetic number, because the mean of its divisors is an integer number (2558896587156).

Almost surely, 2^{21229324215471} is an apocalyptic number.

21229324215471 is a deficient number, since it is larger than the sum of its proper divisors (9477434830401).

21229324215471 is a wasteful number, since it uses less digits than its factorization.

21229324215471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3244586430 (or 3244586427 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 21229324215471 in words is "twenty-one trillion, two hundred twenty-nine billion, three hundred twenty-four million, two hundred fifteen thousand, four hundred seventy-one".